>Expanding on a recent study that identified a heritable general intelligence factor (g) among individual chimpanzees froma battery of cognitive tasks, we hypothesized that the more g-loaded cognitive abilities would also be more heritable addition to presenting greater additive genetic variance and interindividual phenotypic variability. This pattern was confirmed with multiple analytical approaches, and is comparable to that found in humans, indicating fundamental homology. Finally, tool use presented the highest heritability, the largest amount of additive genetic variance and phenotypic variance, consistent with previous findings indicating that it is associated with high interspecies variance and has evolved rapidly in comparative primate studies.

>The signs of mating competition are written into the physiology of the human male, but they are not written equally into the physiology of all racial groupings of human males. It seems that Asian males are different, different in that they are more fully dissimilar from the gorilla than are other races, showing less sexual dimorphism, muscularity, and less marked secondary sexual characteristics, and different in that they are more fully dissimilar from the chimpanzee than are other races, showing less sexual drive and activity as well as smaller testicles and lower sperm counts. It is presently argued that such anatomical differences are a testament to a more peaceably monogamous mating history. In turn, it is then argued that such physiological markers are directly associated with the collectivist ethos that has been historically, anthropologically, and sociologically observed among the Asian people.

underrated thread

>Racial constructionists, anti-naturalists, and anti-realists have challenged users of the biological race concept to provide and defend, from the perspective of biology, biological philosophy, and ethics, a biologically informed concept of race. In this paper, an onto-epistemology of biology is developed. What it is, by this, to be "biological real" and "biologically meaningful" and to represent a "biological natural division" is explained. Early 18th century race concepts are discussed in detail and are shown to be both sensible and not greatly dissimilar to modern concepts. A general biological race concept (GBRC) is developed. It is explained what the GBRC does and does not entail and how this concept unifies the plethora of specific ones, past and present. Other race concepts as developed in the philosophical literature are discussed in relation to the GBRC. The sense in which races are both real and natural is explained. Racial essentialism of the relational sort is shown to be coherent. Next, the GBRC is discussed in relation to anthropological discourse. Traditional human racial classifications are defended from common criticisms: historical incoherence, arbitrariness, cluster discordance, etc. Whether or not these traditional human races could qualify as taxa subspecies – or even species – is considered. It is argued that they could qualify as taxa subspecies by liberal readings of conventional standards. Further, it is pointed out that some species concepts potentially allow certain human populations to be designated as species. It is explained why, by conventional population genetic and statistical standards, genetic differences between major human racial groups are at least moderate. Behavioral genetic differences associated with human races are discussed in general and in specific. The matter of race differences in cognitive ability is briefly considered. Finally, the race concept is defended from various criticisms. First, logical and empirical critiques are dissected. These include: biological scientific, sociological, ontological, onto-epistemological, semantic, and teleological arguments. None are found to have any merit. Second, moral-based arguments are investigated in context to a general ethical frame and are counter-critiqued. Racial inequality, racial nepotism, and the “Racial Worldview" are discussed. What is dubbed the Anti-Racial Worldview is rejected on both empirical and moral grounds. Finally, an area of future investigation – the politics of the destruction of the race concept – is pointed to.

>Knowing how the human brain is shaped by migration and admixture is a critical step in studying human evolution [1 and 2], as well as in preventing the bias of hidden population structure in brain research [3 and 4]. Yet, the neuroanatomical differences engendered by population history are still poorly understood. Most of the inference relies on craniometric measurements, because morphology of the brain is presumed to be the neurocranium’s main shaping force before bones are fused and ossified [5]. Although studies have shown that the shape variations of cranial bones are consistent with population history [6, 7 and 8], it is unknown how much human ancestry information is retained by the human cortical surface. In our group’s previous study, we found that area measures of cortical surface and total brain volumes of individuals of European descent in the United States correlate significantly with their ancestral geographic locations in Europe [9]. Here, we demonstrate that the three-dimensional geometry of cortical surface is highly predictive of individuals’ genetic ancestry in West Africa, Europe, East Asia, and America, even though their genetic background has been shaped by multiple waves of migratory and admixture events. The geometry of the cortical surface contains richer information about ancestry than the areal variability of the cortical surface, independent of total brain volumes. Besides explaining more ancestry variance than other brain imaging measurements, the 3D geometry of the cortical surface further characterizes distinct regional patterns in the folding and gyrification of the human brain associated with each ancestral lineage.

>Jensen (1971) found that black girls score 3 IQ points higher than black boys, andwhite boys 1.5 IQ points higher than white girls. He, nevertheless, concluded that this did not support his Race × Sex × Ability interaction theory. Jensen (1998) further analyzed data, some from the National Longitudinal Survey of Youth (NLSY79), and suggested that there is no sex difference in general intelligence, g. Other studies have questioned Jensen's null sex difference theory.

>The present study tested both theories with data from the ensuring NLSY97 survey, which represents the 15+ million 12–17 year old adolescents living in the US in 1997.

>Total sample analyses confirmed the existence of significant inverse white–black IQ sex differences, and disconfirmed the null sex difference theory.

>Separate race–age analyses demonstrated, however, that robust IQ sex differences materialize only after age 16, with no white–black interaction. At age 17, female IQ trails male by 3.6–7.03 points in three races, respectively.

>Classical IQ probability curves foretell that more males than femaleswill enter the highest echelons of society, irrespective of race, and white Male/Female ratios at IQ 145 successfully predicted real-life sex differences in educational and occupational achievement. White males with IQ 55 can be expected to run a very high risk of encountering severe achievement problems, a risk shared to some extent with Hispanic male, but black females with this low IQ can be expected to perform worse than black males.

>The paper finally proposed models to account for the origin of sex and race differences in IQ and related educational and occupational differences, involving gene copy numbers, brain size, and steroid hormones. It was suggested that the evolutionary background and physiological nature of sex and race differences explain why social engineering fails to eradicate them.

>Previous studies on sex-differentiated mate preferences have focused on univariate analyses. However, because mate selection is inherently multidimensional, a multivariate analysis more appropriately measures sex differences in mate preferences. We used the Mahalanobis distance (D) and logistic regression to investigate sex differences in mate preferences with data secured from participants residing in 37 cultures (n = 10,153). Sex differences are large in multivariate terms, yielding an overall D = 2.41, corresponding to overlap between the sexes of just 22.8%. Moreover, knowledge of mate preferences alone affords correct classification of sex with 92.2% accuracy. Finally, pattern-wise sex differences are negatively correlated with gender equality across cultures but are nonetheless cross-culturally robust. Discussion focuses on implications in evaluating the importance and magnitude of sex differences in mate preferences.

Why do we like the music we do? Research has shown that musical preferences and personality are linked, yet little is known about other influences on preferences such as cognitive styles. To address this gap, we investigated how individual differences in musical preferences are explained by the empathizing-systemizing (E-S) theory. Study 1 examined the links between empathy and musical preferences across four samples. By reporting their preferential reactions to musical stimuli, samples 1 and 2 (Ns = 2,178 and 891) indicated their preferences for music from 26 different genres, and samples 3 and 4 (Ns = 747 and 320) indicated their preferences for music from only a single genre (rock or jazz). Results across samples showed that empathy levels are linked to preferences even within genres and account for significant proportions of variance in preferences over and above personality traits for various music-preference dimensions. Study 2 (N = 353) replicated and extended these findings by investigating how musical preferences are differentiated by E-S cognitive styles (i.e., ‘brain types’). Those who are type E (bias towards empathizing) preferred music on the Mellow dimension (R&B/soul, adult contemporary, soft rock genres) compared to type S (bias towards systemizing) who preferred music on the Intense dimension (punk, heavy metal, and hard rock). Analyses of fine-grained psychological and sonic attributes in the music revealed that type E individuals preferred music that featured low arousal (gentle, warm, and sensual attributes), negative valence (depressing and sad), and emotional depth (poetic, relaxing, and thoughtful), while type S preferred music that featured high arousal (strong, tense, and thrilling), and aspects of positive valence (animated) and cerebral depth (complexity). The application of these findings for clinicians, interventions, and those on the autism spectrum (largely type S or extreme type S) are discussed.

>Published Genome Wide Association Studies (GWAS), reporting the presence of alleles exhibiting significant and replicable associations with IQ, are reviewed. The average between-population frequency (polygenic score) of nine alleles positively and significantly associated with intelligence is strongly correlated to country-level IQ (r = .91). Factor analysis of allele frequencies furthermore identified a metagene with a similar correlation to country IQ (r = .86). The majority of the alleles (seven out of nine) loaded positively on this metagene. Allele frequencies varied by continent in a way that corresponds with observed population differences in average phenotypic intelligence. Average allele frequencies for intelligenceGWAS hits exhibited higher inter-population variability than random SNPs matched to theGWAS hits or GWAS hits for height. This indicates stronger directional polygenic selection for intelligence relative to height. Random sets of SNPs and Fst distances were employed to deal with the issue of autocorrelation due to population structure. GWAS hits were much stronger predictors of IQ than random SNPs. Regressing IQ on Fst distances did not significantly alter the results nonetheless it demonstrated that, whilst population structure due to genetic drift and migrations is indeed related to IQ differences between populations, the GWAS hit frequencies are independent predictors of aggregate IQ differences.

>This research establishes that the emergence, prevalence, recurrence, and severity of intrastate conflicts in the modern era reflect the long shadow of prehistory. Exploiting variations across national populations, it demonstrates that genetic diversity, as determined predominantly during the exodus of humans from Africa tens of thousands of years ago, has contributed significantly to the frequency, incidence, and onset of both overall and ethnic civil conflict over the last half-century, accounting for a large set of geographical and institutional correlates of conflict, as well as measures of economic development. Furthermore, the analysis establishes the significant contribution of genetic diversity to the intensity of social unrest and to the incidence of intragroup factional conflict. These findings arguably reflect the contribution of genetic diversity to the degree of fractionalization and polarization across ethnic, linguistic, and religious groups in the national population; the adverse influence of genetic diversity on interpersonal trust and cooperation; the contribution of genetic diversity to divergence in preferences for public goods and redistributive policies; and the potential impact of genetic diversity on economic inequality within a society.

>Most scientific discoveries have originated from Europe, and Europeans have won 20 times more Nobel Prizes than have Northeast Asians. We argue that this is explained not by IQ, but by interracial personality differences, underpinned by differences in gene distribution. In particular, the variance in scientific achievement is explained by differences in inquisitiveness (DRD4 7-repeat), psychological stability (5HTTLPR long form), and individualism (mu-opioid receptor gene; OPRM1 G allele). Northeast Asians tend to be lower in these psychological traits, which we argue are necessary for exceptional scientific accomplishments. Since these traits comprise a positive matrix, we constructed a q index (measuring curiosity) from these gene frequencies among world populations. It is found that both IQ scores and q index contribute significantly to the number of per capita Nobel Prizes.

>Male homosexual preference (MHP) has long been of interest to scholars studying the evolution of human sexuality. Indeed, MHP is partially heritable, induces a reproductive cost and is common. MHP has thus been considered a Darwinian paradox. Several questions arise when MHP is considered in an evolutionary context. At what point did MHP appear in the human evolutionary history? Is MHP present in all human groups? How has MHP evolved, given that MHP is a reproductively costly trait? These questions were addressed here, using data from the anthropological and archaeological literature. Our detailed analysis of the available data challenges the common view of MHP being a “virtually universal” trait present in humans since prehistory. The conditions under which it is possible to affirm that MHP was present in past societies are discussed. Furthermore, using anthropological reports, the presence or absence of MHP was documented for 107 societies, allowing us to conclude that evidence of the absence of MHP is available for some societies. A recent evolutionary hypothesis has argued that social stratification together with hypergyny (the hypergyny hypothesis) are necessary conditions for the evolution of MHP. Here, the link between the level of stratification and the probability of observing MHP was tested using an unprecedented large dataset. Furthermore, the test was performed for the first time by controlling for the phylogenetic non-independence between societies. A positive relationship was observed between the level of social stratification and the probability of observing MHP, supporting the hypergyny hypothesis.

>Toward a Biology of Collectivism

The fuck?

>Immigrants can be classified into groups based on their country of origin. Group-level data concerning immigrant crime by country of origin was obtained from a 2005 Dutch-language report and were from 2002. There are data for 57 countries of origin.

>The crime rates were correlated with country of origin predictor variables: national IQ, prevalence of Islam and general socioeconomic factor (S). For males aged 12-17 and 18-24, the mean correlation with IQ, Islam, and S was, respectively, -.51, .37, and -.42. When subsamples split into 1st and 2nd generations were used, the mean correlation was -.74, .34, and -.40. A general crime factor among young persons was extracted. The correlations with the predictors for this variable were -.80, .34, and -.43. The results were similar when weighing the observations by the population of each immigrant group in the Netherlands. The results were also similar when using crime rates controlled for differences in household income.

>Some groups increased their crime rates from the 1st to 2nd generation, while for others the reverse happened.

http://www.reuters.com/article/2015/10/14/us-science-teeth-idUSKCN0S82CB20151014

>Scientists on Wednesday announced the discovery of teeth between 80,000 and 120,000 years old that they say provide the earliest evidence of fully modern humans outside Africa.

>"This finding suggests that Homo sapiens is present in Asia much earlier than the classic, recent 'Out of Africa' hypothesis was suggesting: 50,000 years ago," Martinón-Torres said.

>>2668

This thread is exclusively for academic journal articles, not popular press articles.

http://ge.tt/api/1/files/2Z3Gp3Q2/0/blob?download

>The hominin record from southern Asia for the early Late Pleistocene epoch is scarce. Well-dated and well-preserved fossils older than ~45,000 years that can be unequivocally attributed to Homo sapiens are lacking1, 2, 3, 4. Here we present evidence from the newly excavated Fuyan Cave in Daoxian (southern China). This site has provided 47 human teeth dated to more than 80,000 years old, and with an inferred maximum age of 120,000 years. The morphological and metric assessment of this sample supports its unequivocal assignment to H. sapiens. The Daoxian sample is more derived than any other anatomically modern humans, resembling middle-to-late Late Pleistocene specimens and even contemporary humans. Our study shows that fully modern morphologies were present in southern China 30,000–70,000 years earlier than in the Levant and Europe5, 6, 7. Our data fill a chronological and geographical gap that is relevant for understanding when H. sapiens first appeared in southern Asia. The Daoxian teeth also support the hypothesis that during the same period, southern China was inhabited by more derived populations than central and northern China. This evidence is important for the study of dispersal routes of modern humans. Finally, our results are relevant to exploring the reasons for the relatively late entry of H. sapiens into Europe. Some studies have investigated how the competition with H. sapiens may have caused Neanderthals’ extinction (see ref. 8 and references therein). Notably, although fully modern humans were already present in southern China at least as early as ~80,000 years ago, there is no evidence that they entered Europe before ~45,000 years ago. This could indicate that H. neanderthalensis was indeed an additional ecological barrier for modern humans, who could only enter Europe when the demise of Neanderthals had already started.

>Functional magnetic resonance imaging (fMRI) studies typically collapse data from many subjects, but brain functional organization varies between individuals. Here we establish that this individual variability is both robust and reliable, using data from the Human Connectome Project to demonstrate that functional connectivity profiles act as a 'fingerprint' that can accurately identify subjects from a large group. Identification was successful across scan sessions and even between task and rest conditions, indicating that an individual's connectivity profile is intrinsic, and can be used to distinguish that individual regardless of how the brain is engaged during imaging. Characteristic connectivity patterns were distributed throughout the brain, but the frontoparietal network emerged as most distinctive. Furthermore, we show that connectivity profiles predict levels of fluid intelligence: the same networks that were most discriminating of individuals were also most predictive of cognitive behavior. Results indicate the potential to draw inferences about single subjects on the basis of functional connectivity fMRI.

> We investigated adult schizotypy and objective and subjective social rank in childhood.

> We found that low objective and subjective rank linked with most schizotypy dimensions.

> In regression analyses, subjective rank was the only significant predictor.

> Subjective rank is a crucial factor in vulnerability to mental distress.

>There has been much recent interest in inequality as a causal predictor of mental distress (Pickett & Wilkinson, 2015). However, research has not yet investigated the relationship between objective and subjective social rank and schizotypy, a personality trait that is associated with vulnerability to mental distress. In the present study, we looked at the relative contribution of childhood objective and subjective social rank in relation to schizotypy in adulthood. In an on-line sample of 365 volunteers based in the United Kingdom, we used post-code information in reconstructing an index of socio-economic status in childhood, as well as asking the participants subjective recollections of their childhood status in relation to others. We found that the subjective, rather than the objective measure of status was a significant predictor of all the dimensions of schizotypy. Individuals who had high objective, and low subjective status had higher scores in Cognitive Disorganisation. Our results highlight the importance of psycho-social route in the development of vulnerability to mental distress, and can be interpreted in light of the social rank theory.

No pdf to be found. http://www.sciencedirect.com/science/article/pii/S019188691530026X

For info about schizotypy check: http://www.psych-it.com.au/Psychlopedia/article.asp?id=188

>>2913

>No pdf to be found.

http://uncnews.unc.edu/2015/11/23/a-huge-chunk-of-a-tardigrades-genome-comes-from-foreign-dna/

>Researchers from the University of North Carolina at Chapel Hill have sequenced the genome of the nearly indestructible tardigrade, the only animal known to survive the extreme environment of outer space, and found something they never expected: that they get a huge chunk of their genome – nearly one-sixth or 17.5 percent – from foreign DNA.

>“We had no idea that an animal genome could be composed of so much foreign DNA,” said co-author Bob Goldstein, faculty in the biology department in UNC’s College of Arts and Sciences. “We knew many animals acquire foreign genes, but we had no idea that it happens to this degree.”

>The work, publish today in the Proceeding of the National Academy of Sciences, not only raises the question of whether there is a connection between foreign DNA and the ability to survive extreme environments, but further stretches conventional views of how DNA is inherited.

I know these are not pdfs but this is a decent resource:

http://www.humanbiologicaldiversity.com/

>>2948

it's like a foreskin crossed with a puppy

>We investigated Big Five personality traits for a novel sample of individuals engaged in politically and economically-charged protest activity at the Occupy Wall Street demonstrations in New York City. We gathered data about protesters’ personality traits by administering the TIPI battery in a survey conducted in October 2011. We compared distributions of Big Five traits for the sample with population norms. We expected our sample to show higher levels of extraversion, openness, and emotional stability, and lower levels of agreeableness, compared to norms, with no difference in conscientiousness. We found mixed support for our hypotheses: our sample showed higher levels of emotional stability and extraversion, lower levels of agreeableness, and no differences in conscientiousness, but lower levels of openness.

>BACKGROUND: Delay discounting (DD), a decline in the subjective value of reward with increasing delay until its receipt, is an established behavioral model of impulsive choice, a key component of a broader impulsivity construct. Greater DD, i.e., a tendency to choose smaller immediate over larger delayed rewards, has been implicated as a potential intermediate phenotype (endophenotype) for addictive disorders and comorbid externalizing psychopathology, particularly in adolescence. However, genetic and environmental origins of DD remain unclear. Accordingly, the goal of the present study was to assess heritability of DD, an important aspect of its utility as an endophenotype.

>METHODS: A commonly used computerized procedure involving choice between varying amounts of money available immediately and a standard amount of $100 presented at variable delays was administered to a populationased sample of twins aged 16 and 18 (n 5 560, including 134 monozygotic and 142 dizygotic pairs). DD was quantified using area under the discounting curve and the k coefficient estimated by fitting a hyperbolic model to individual data. Heritability was assessed using linear structural equation modeling of twin data.

>RESULTS: The genetic analysis revealed significant heritability of both DD measures (area under the discounting curve: 46% and 62%; k: 35% and 55% at age 16 and 18, respectively).

>CONCLUSIONS: The present study provides evidence for heritability of both model-based and model-free DD measures and suggests that DD is a promising intermediate phenotype for genetic dissection of impulsivity and externalizing spectrum disorders.

>Patients diagnosed with psychotic disorders (for example, schizophrenia and bipolar disorder) have elevated risks of committing violent acts, particularly if they are comorbid with substance misuse. Despite recent insights from quantitative and molecular genetic studies demonstrating considerable pleiotropy in the genetic architecture of these phenotypes, there is currently a lack of large-scale studies that have specifically examined the aetiological links between psychotic disorders and violence. Using a sample of all Swedish individuals born between 1958 and 1989 (n=3 332 101), we identified a total of 923 259 twin-sibling pairs. Patients were identified using the National Patient Register using validated algorithms based on International Classification of Diseases (ICD) 8–10. Univariate quantitative genetic models revealed that all phenotypes (schizophrenia, bipolar disorder, substance misuse, and violent crime) were highly heritable (h2=53–71%). Multivariate models further revealed that schizophrenia was a stronger predictor of violence (r = 0.32; 95% confidence interval: 0.30–0.33) than bipolar disorder (r = 0.23; 0.21–0.25), and large proportions (51–67%) of these phenotypic correlations were explained by genetic factors shared between each disorder, substance misuse, and violence. Importantly, we found that genetic influences that were unrelated to substance misuse explained approximately a fifth (21%; 20–22%) of the correlation with violent criminality in bipolar disorder but none of the same correlation in schizophrenia (P bipolar disorder < 0.001; P schizophrenia = 0.55). These findings highlight the problems of not disentangling common and unique sources of covariance across genetically similar phenotypes as the latter sources may include aetiologically important clues. Clinically, these findings underline the importance of assessing risk of different phenotypes together and integrating interventions for psychiatric disorders, substance misuse, and violence.

>Empirical evidence and social commentary demonstrate favoring of Whites over Blacks in attitudes, social judgment, and social behavior. In 6 studies (N > 4,000), we provide evidence for a pro-Black bias in academic decision making. When making multiple admissions decisions for an academic honor society, participants from undergraduate and online samples had a more relaxed acceptance criterion for Black than White candidates, even though participants possessed implicit and explicit preferences for Whites over Blacks. This pro-Black criterion bias persisted among subsamples that wanted to be unbiased and believed they were unbiased. It also persisted even when participants were given warning of the bias or incentives to perform accurately. These results suggest opportunity for theoretical and empirical innovation on the conditions under which biases in social judgment favor and disfavor different social groups, and how those biases manifest outside of awareness or control.

>General socioeconomic factor (S) scores were calculated for US states by SIRE (self-identified race/ethnicity) groups based on 3 indicators. The S factor loadings were generally but not always stable across subgroup analyses and the factor scores were generally stable across factor analytic extraction methods (almost all r's ≈ 1). For Whites, Blacks and Hispanics, there were strong correlations between cognitive ability scores and S factor scores across states (r's = .55 to .78; N's = 28-50). This pattern also held when all data were analyzed together (r = .86, N = 115). Furthermore, the size of the Hispanic-White and Black-White S and cognitive ability gaps strongly correlated across states (r's = .62-.69; N's = 36-37). Lastly, parasite prevalence did not plausibly explain SIRE gaps in cognitive ability because gaps were smaller in more parasite-rich states (combined analysis r = -.17, N = 91).

>Previously, we looked at the association between overall state-level racial ancestry and overall state-level outcomes. It was found that European ancestry relative to African and Amerindian ancestry was associated with better outcomes. This analysis was extended by looking at the state-level ancestry-outcome associations individually for Black and Hispanic SIRE groups. For Blacks, state-level European and Amerindian admixture was positively associated with better outcomes (mean r's = .28 and .27), while African admixture was associated with worse outcomes (mean r = -31, N = 31). For Hispanics, African and European admixture was related to better outcomes (mean r's = .36 and .13), while Amerindian admixture was associated with worse outcomes (mean r = -.40; N = 24-34). These SIRE specific state-level results were only partially consistent with the overall state-level ones.

Finally, it was found that climatic and geospatial variables did not correlate strongly with cognitive ability and S scores when scores were decomposed by SIRE group, but did so at the total state-level, even after statistical control.

>National differences in subjective well-being (SWB) have been attributed to socioeconomic, climatic, and genetic factors. We focus on one particular facet of SWB—happiness or positive affect—measured by the nationally representative World Values Survey (WVS). We find that national percentages of very happy people across the three latest WVS waves (2000–2004, 2005–2009, 2010–2014) are consistently and highly correlated with national prevalence of the rs324420 A allele in the FAAH gene, involved in the hydrolysis of anandamide, a substance that reportedly enhances sensory pleasure and helps reduce pain. Climatic differences are also significantly associated with national differences in happiness, whereas economic wealth, recent economic growth, rule of law, pathogen prevalence, and the distribution of short versus long alleles in the serotonin transporter gene SLC6A4 are not significant predictors of national happiness.

>Prior research suggests that liberals are more complex than conservatives. However, it may be that liberals are not more complex in general, but rather only more complex on certain topic domains (while conservatives are more complex in other domains). Four studies (comprised of over 2,500 participants) evaluated this idea. Study 1 involves the domain specificity of a self-report questionnaire related to complexity (dogmatism). By making only small adjustments to a popularly used dogmatism scale, results show that liberals can be significantly more dogmatic if a liberal domain is made salient. Studies 2–4 involve the domain specificity of integrative complexity. A large number of open-ended responses from college students (Studies 2 and 3) and candidates in the 2004 Presidential election (Study 4) across an array of topic domains reveals little or no main effect of political ideology on integrative complexity, but rather topic domain by ideology interactions. Liberals are higher in complexity on some topics, but conservatives are higher on others. Overall, this large dataset calls into question the typical interpretation that conservatives are less complex than liberals in a domain-general way.

>Ancient population expansions and dispersals often leave enduring signatures in the cultural traditions of their descendants, as well as in their genes and languages. The international folktale record has long been regarded as a rich context in which to explore these legacies. To date, investigations in this area have been complicated by a lack of historical data and the impact of more recent waves of diffusion. In this study, we introduce new methods for tackling these problems by applying comparative phylogenetic methods and autologistic modelling to analyse the relationships between folktales, population histories and geographical distances in Indo-European-speaking societies. We find strong correlations between the distributions of a number of folktales and phylogenetic, but not spatial, associations among populations that are consistent with vertical processes of cultural inheritance. Moreover, we show that these oral traditions probably originated long before the emergence of the literary record, and find evidence that one tale (‘The Smith and the Devil’) can be traced back to the Bronze Age. On a broader level, the kinds of stories told in ancestral societies can provide important insights into their culture, furnishing new perspectives on linguistic, genetic and archaeological reconstructions of human prehistory.

>This study examines the relations between sociodemographic sex differences and life history strategies in the populations of Mexican States. Sex differences in anatomy and behavior was measured with traits such as educational achievement, mortality, and morbidity. The data were obtained from the Instituto Nacional de Estadística y Geografía (INEGI) and sampled from thirty-one Mexican states and the Federal District (N = 32). An extension analysis was performed selecting only the sex ratio variables that had a correlation with the slow Life History factor greater than or equal to an absolute value of .25. A unit-weighted sex ratio factor was created using these variables. Across 32 Mexican states, the correlation between latent slow life history and sex ratio was .57 (p < .05). These results are consistent with our hypothesis that slower life histories favor reduced sexual dimorphism in physiology and behavior among human subnational populations. The results of the study further understanding of variations in population sex differences, male-biased behaviors toward sexual equality, and the differences among subnational (regional) populations within the United States of Mexico.

http://www.nature.com/articles/srep20509

open article

http://phys.org/news/2016-02-genes-latrinesvikings-worms-clues-emphysema.html

In a paper published today in Scientific Reports a group of researchers led by LSTM have found that the key to an inherited deficiency, predisposing people to emphysema and other lung conditions, could lie in their Viking roots.

Archaeological excavations of Viking latrine pits in Denmark have revealed that these populations suffered massive worm infestations. The way that their genes developed to protect their vital organs from disease caused by worms has become the inherited trait which can now lead to lung disease in smokers.

>Last year I cowrote an essay with Greg Lukianoff titled “The Coddling of the American Mind” (Lukianoff & Haidt, 2015). Lukianoff and I analyzed several new concepts that have been spreading rapidly around the academy—but almost nowhere else in American society. The two most colorful are “Trigger warnings” (warnings given to students before professors assign readings that might reactivate painful memories in survivors of trauma) and “microaggressions” (words, questions, or even facial expressions that have the effect—often unintended—of making another person feel marginalized, different, or excluded). A search for these terms on Google Trends shows that they were barely mentioned before 2012 but have been rising rapidly in popularity since late 2013.

>These terms are part of a new conceptual package that includes all of the older concepts long referred to as “political correctness” but with greatly expanded notions of harm, trauma, mental illness, vulnerability, and harassment. These concepts seem to have expanded in just the way that Nick Haslam (this issue) describes—horizontally, to take in new kinds of cases (such as adding the reading of novels to the list of traumatizing activities), and vertically, to take in ever less extreme versions of older cases (as is made explicit by the prefix “micro” in the word “microaggression”). In this conceptually augmented political correctness, the central idea seems to be that many college students are so fragile that institutions and right-thinking people must all work together to protect vulnerable individuals from exposure to words and ideas that could damage them in a lasting way. If this protection requires banning certain speakers from campus, or punishing student newspapers that publish opinions that upset the dominant campus sensibility, then so be it.

Dug up from the journal leak by >>>/pol/4989459

http://www.sciencemag.org/news/2014/11/european-genetic-identity-may-stretch-back-36000-years

The origin of contemporary Europeans remains contentious. We obtain a genome sequence from Kostenki 14 in European Russia dating to 38,700 to 36,200 years ago, one of the oldest fossils of Anatomically Modern Humans from Europe. We find that K14 shares a close ancestry with the 24,000-year-old Mal’ta boy from central Siberia, European Mesolithic hunter-gatherers, some contemporary western Siberians, and many Europeans, but not eastern Asians. Additionally, the Kostenki 14 genome shows evidence of shared ancestry with a population basal to all Eurasians that also relates to later European Neolithic farmers. We find that Kostenki 14 contains more Neandertal DNA that is contained in longer tracts than present Europeans. Our findings reveal the timing of divergence of western Eurasians and East Asians to be more than 36,200 years ago and that European genomic structure today dates back to the Upper Paleolithic and derives from a meta-population that at times stretched from Europe to central Asia.

>We meta-analyzed studies reporting associations between socioeconomic outcomes (S outcomes) and racial ancestries (European, African and Amerindian) in the Americas. 33 studies yielded a total of 120 datapoints and 41 non-overlapping effect sizes.

>We found that European ancestry is positively related to S outcomes r = .17 [95% CI: .12 to .21], Amerindian negatively -.11 [-.16 to -.06] and African negatively -.09 [-.17 to -.01].

>The “shallowing hypothesis” suggests that recent media technologies have led to a dramatic decline in ordinary daily reflective thought. According to this hypothesis, certain types of social media (e.g., texting and Facebook) promote rapid, shallow thought that can result in cognitive and moral “shallowness” if used too frequently. The purpose of this study was to test key claims made by the shallowing hypothesis, while simultaneously advancing our general knowledge regarding the effects of social media usage. The relationships between texting frequency, social media usage, the Big Five personality traits, reflectiveness, and moral shallowness were examined in undergraduate students at a Canadian university (N = 149). Participants completed an online questionnaire comprised of five measures that assessed their social media and texting behavior, use of reflective thought, life goals, personality dimensions, and demographic characteristics. Correlates of both texting frequency and social media usage were consistent with the shallowing hypothesis and previous literature; participants who frequently texted or used social media were less likely to engage in reflective thought and placed less importance on moral life goals.

>There are a number of limitations to the present study that must be taken into consideration. Carr's hypothesis suggests that our frequent use of ultra-brief social media is responsible for a decline in daily reflective thought as well as the moral shallowing of its most frequent users; however, the results of the current study only suggest correlation, not causation. All of the reported associations are cross-sectional and non-experimental which makes it difficult to determine whether there are alternative explanations for the relationships between variables. It is entirely possible that individuals with more shallow life goals and less desire to engage in reflective thought more readily embrace texting and the use of ultra-brief social media. Future studies should utilize longitudinal and experimental methods in order to more effectively test the shallowing hypothesis and determine the relative influences of socialization, selection, or their interactive effects. Secondly, the overrepresentation of female participants makes it impossible to identify any gender differences in texting frequency or social media usage and the reliance on a university's participant pool to acquire participants makes it difficult to examine the effects of education, age, or social economic status, since these variables tend to be restricted in range in a university sample. Future studies should use larger and more diverse samples.

>Same-sex genital interactions (SSGIs) occur across the order Primates, yet explaining their maintenance in evolutionary terms appears problematic; as such interactions seem to counteract reproductive goals. We hypothesised that in more promiscuous species, where sexual motivation, mating effort, and non-conceptive heterosexual behaviour are greater, SSGIs may also occur at greater frequencies without necessarily impeding reproduction. We found that the expression of both male and female SSGIs were greater in multimale systems than in unimale ones. Both male and female SSGIs were positively correlated with the degree of promiscuity (relative testes mass). As mating system confers biases in the sex ratio that may influence the expression of SSGIs, we controlled for availability of members of the same-sex. When employing this control, results were largely congruent. For males, SSGIs were expressed more frequently in multimale systems. For both sexes, SSGIs were expressed more frequently with greater relative testes mass. We suggest SSGIs in primates may be a neutral by-product of selection for increases in promiscuous sexual activity, and that in certain instances these interactions may be co-opted to facilitate adaptive social functions.

>Following Snyderman and Rothman (1987, 1988), we surveyed expert opinions on the current state of intelligence research. This report examines expert opinions on causes of international differences in student assessment and psychometric IQ test results. Experts were surveyed about the importance of culture, genes, education (quantity and quality), wealth, health, geography, climate, politics, modernization, sampling error, test knowledge, discrimination, test bias, and migration. The importance of these factors was evaluated for diverse countries, regions, and groups including Finland, East Asia, Sub-Saharan Africa, Southern Europe, the Arabian-Muslim world, Latin America, Israel, Jews in the West, Roma (gypsies), and Muslim immigrants. Education was rated by N=71 experts as the most important cause of international ability differences. Genes were rated as the second most relevant factor but also had the highest variability in ratings. Culture, health, wealth, modernization, and politics were the next most important factors, whereas other factors such as geography, climate, test bias, and sampling error were less important. The paper concludes with a discussion of limitations of the survey (e.g., response rates and validity of expert opinions).

>This study examined the association between sexual orientation and nonviolent and violent delinquency across the life course. We analyzed self-reported nonviolent and violent delinquency in a sample of heterosexual males (N = 5220–7023) and females (N = 5984–7875), bisexuals (N = 34–73), gay males (N = 145–189), and lesbians (N = 115–150) from the National Longitudinal Study of Adolescent to Adult Health (Add Health). The analyses revealed, in general, that bisexuals were the most delinquent of the sexual orientation categories for both males and females. Additional analyses revealed that heterosexual males reported significantly higher levels of both violent and nonviolent delinquency than gay males, whereas lesbians reported more involvement in nonviolent delinquency and, to a lesser extent, violent delinquency relative to heterosexual females. Analyses also revealed that lesbians reported significantly more delinquent behavior, particularly for nonviolent delinquency, than gay males. Future research should explore the mechanisms that account for these observed patterns and how they can be used to more fully understand the etiology of delinquency.

>Research Summary

>Race-related debates often assume that implicit racial bias will result in racially biased decisions to shoot. Previous research has examined racial bias in police decisions by pressing “shoot” or “don’t-shoot” buttons in response to pictures of armed and unarmed suspects. As a result of its lack of external validity, however, this methodology provides limited insight into officer behavior in the field. In response, we conducted the first series of experimental research studies that tested police officers and civilians in strikingly realistic deadly force simulators.

>Policy Implications

>This article reports the results of our most recent experiment, which tested 80 police patrol officers by applying this leading edge method. We found that, despite clear evidence of implicit bias against Black suspects, officers were slower to shoot armed Black suspects than armed White suspects, and they were less likely to shoot unarmed Black suspects than unarmed White suspects. These findings challenge the assumption that implicit racial bias affects police behavior in deadly encounters with Black suspects.

http://www.nature.com/articles/srep24435

>These findings elucidate specific gender differences in essential neurocognitive functions

>We found evidence for differences in performance monitoring functions between men and women both on a behavioural as well as electrophysiological level. Behaviourally, men were found to respond faster in the task overall whereas no difference in error rate was observed. Additionally, we observed an overall negative association between RT and error rate, indicating that subjects who responded faster also made more errors. Thus, independent of this general effect, men performed the task more efficiently. This finding fits well with several other studies that found faster responding in male subjects employing a Flanker task in adults26,32 and children11 and additionally with behavioural studies employing a variety of RT paradigms29,40.

>A possible explanation for this finding would be the ‘extreme male brain’ hypothesis41, which implies that women are more easily distracted by semantic as well as social cues compared to men due to more efficient, autonomic processing of these stimuli.

>Reproductive medicine and commercial sperm banking have facilitated an evolutionary shift in how women are able to choose who fathers their offspring, by notionally expanding women's opportunity set beyond former constraints. This study analyses 1546 individual reservations of semen by women from a private Australian assisted reproductive health facility across a ten year period from 2006 to 2015. Using the time that each sample was available at the facility until reservation, we explore women's preference for particular male characteristics. We find that younger donors, and those who hold a higher formal education compared to those with no academic qualifications are more quickly selected for reservation by women. Both age and education as proxies for resources are at the centre of Parental Investment theory, and our findings further build on this standard evolutionary construct in relation to female mate preferences. Reproductive medicine not only provides women the opportunity to become a parent, where previously they would not have been able to, it also reveals that female preference for resources of their potential mate (sperm donor) remain, even when the notion of paternal investment becomes redundant. These findings build on behavioural science's understanding of large-scale decisions and human behaviour in reproductive medical settings.

>Country-level total fertility rates (TFR) and cognitive ability are negatively correlated, suggesting the existence of a selection pressure that might be reducing global G. Also, the cross-population frequencies of several SNPs have been found to predict cognitive ability between countries. This study applies a cross-cultural sociogenetic approach to explore the role of latent factors among cognitive ability measures and these SNPs in moderating the associations among their indicators and TFR. Using a G factor constructed from five measures of cognitive ability, positive moderation is found on the TFRability relationship (ρ = 0.251 N = 60.6 countries). Using a metagene common factor among eight SNPs, positive moderation is also found on the TFRSNP relationship (ρ = 0.816, N = 18 countries). An inference of polygenic selection for lower G is supported by the findings of two multivector co-moderation analyses. When controlled for one another, Human Development Index and metagene frequency both independently predicted TFR (β = − 0.339, and − 0.678 respectively, N = 18 countries). This indicates a joint impact of intelligent fertility control and life history slowing on the distribution of TFR values. Based on these results, polygenic selection might be reducing heritable G globally by − 0.253 points per decade, highlighting the importance of the Flynn effect as a contributor to global development.

>The Ashkenazi Jewish (AJ) population is important in medical genetics due to its high rate of Mendelian disorders and other unique genetic characteristics. Ashkenazi Jews have appeared in Europe in the 10th century, and their ancestry is thought to involve an admixture of European (EU) and Middle-Eastern (ME) groups. However, both the time and place of admixture in Europe are obscure and subject to intense debate. Here, we attempt to characterize the Ashkenazi admixture history using a large Ashkenazi sample and careful application of new and existing methods. Our main approach is based on local ancestry inference, assigning each Ashkenazi genomic segment as EU or ME, and comparing allele frequencies across EU segments to those of different EU populations. The contribution of each EU source was also evaluated using GLOBETROTTER and analysis of IBD sharing. The time of admixture was inferred using multiple tools, relying on statistics such as the distributions of segment lengths and the total EU ancestry per chromosome and the correlation of ancestries along the chromosome. Our simulations demonstrated that distinguishing EU vs ME ancestry is subject to considerable noise at the single segment level, but nevertheless, conclusions could be drawn based on chromosome-wide statistics. The predominant source of EU ancestry in AJ was found to be Southern European (≈60-80%), with the rest being likely Eastern European. The inferred admixture time was ≈35 generations ago, but multiple lines of evidence suggests that it represents an average over two or more admixture events, pre- and post-dating the founder event experienced by AJ in late medieval times. The time of the pre-bottleneck admixture event was bounded to 25-55 generations ago.

>Job complexity and employee intelligence covary strongly. Likewise, race differences exist on mean IQ / g scores. Spearman’s hypothesis predicts that race differences on cognitive tests are mainly g differences, and that the former should covary with how well mental tests measure the latter. Here we use jobs as “mental tests,” and predict that as job IQ increases, the percent of White and Asian workers will increase, while the percent of Black workers will decrease. We found moderate to strong support for Spearman’s hypothesis across these three racial groups. We also found a very large correlation (.86) between job IQ and complexity, as measured by the U.S. Federal Government’s Dictionary of Occupational Titles classification scheme. In sum, like different mental tests, different jobs are more or less g-loaded. And, consistent with Spearman’s hypothesis, the g-loading of a job predicts its demographic composition.

Genetic origins of the Ainu inferred from combined DNA analyses of maternal and paternal lineages.

J Hum Genet (2004) 49:187–193

DOI 10.1007/s10038-004-0131-x

>>3215

https://en.wikipedia.org/wiki/Monoamine_oxidase_A#Antisocial_behavior

>5.5% of Black men, 0.1% of Caucasian men, and 0.00067% of Asian men carried the 2R allele.

The VNTR 2 repeat in MAOA and delinquent behavior in adolescence and young adulthood: associations and MAOA promoter activity · 2008 Jan 23.

>Genetic studies of delinquent and criminal behavior are rare in spite of the wide recognition that individuals may differ in their propensity for delinquency and criminality. Using 2524 participants in Add Health in the United States, the present study demonstrates a link between the rare 2 repeat of the 30-bp VNTR in the MAOA gene and much higher levels of self-reported serious and violent delinquency. The evidence is based on a statistical association analysis and a functional analysis of MAOA promoter activity using two human brain-derived cell lines: neuroblastoma SH-SY5Y and human glioblastoma 1242-MG. The association analysis shows that men with a 2R report a level of serious delinquency and violent delinquency in adolescence and young adulthood that were about twice (CI: (0.21, 3.24), P = 0.025; and CI: (0.37, 2.5), P = 0.008 for serious and violent delinquency, respectively) as high as those for participants with the other variants. The results for women are similar, but weaker. In the functional analysis, the 2 repeat exhibits much lower levels of promoter activity than the 3 or 4 repeat.

Genetic Background of Extreme Violent Behavior Article in Molecular Psychiatry · October 2014

>In developed countries, the majority of all violent crime is committed by a small group of antisocial recidivistic offenders, but no genes have been shown to contribute to recidivistic violent offending or severe violent behavior, such as homicide. Our results, from two independent cohorts of Finnish prisoners, revealed that a monoamine oxidase A (MAOA) low-activity genotype (contributing to low dopamine turnover rate) as well as the CDH13 gene (coding for neuronal membrane adhesion protein) are associated with extremely violent behavior (at least 10 committed homicides, attempted homicides or batteries). No substantial signal was observed for either MAOA or CDH13 among non-violent offenders, indicating that findings were specific for violent offending, and not largely attributable to substance abuse or antisocial personality disorder. These results indicate both low monoamine metabolism and neuronal membrane dysfunction as plausible factors in the etiology of extreme criminal violent behavior, and imply that at least about 5-10% of all severe violent crime in Finland is attributable to the aforementioned MAOA and CDH13 genotypes.Molecular Psychiatry advance online publication, 28 October 2014; doi:10.1038/mp.2014.130.

if you're a /fit/-fag, you go trolled hard with zinc supplements.

full paper online:

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0055384

>These results indicate that zinc plays an important role in hippocampus-dependent learning and memory and BDNF expression, high dose supplementation of zinc induces specific zinc deficiency in hippocampus, which further impair learning and memory due to decreased availability of synaptic zinc and BDNF deficit.

>Decreased zinc level in hippocampus correlates positively with spatial memory deficit in aged rats [14], and in situ chelating of button zinc disrupts performance of the animal in spatial memory test [15]. There is a large body of evidence showing that dietary zinc deficiency may induce learning and memory impairment [16], [17], [18], but little is known about the effects of zinc overdose on brain zinc homeostasis and memory. Two studies have reported that zinc supplemented rats showed spatial reference memory deficit [19], [20], however, the detailed mechanisms underlying the memory impairment need further exploration.

>In the present study, we enhanced the zinc intake in weaning ICR mice by increasing zinc levels in drinking water for 3 months, and found unexpectedly a zinc deficiency in the hippocampus, which was accompanied with hippocampus dependent memory deficit and decreased expression levels of learning and memory related receptors/synaptic proteins. Furthermore, the zinc-regulated BDNF neurotrophic signaling was also impaired in hippocampus. Thus, hippocampus is susceptible to zinc enhancement, high dose supplementation of zinc may impair hippocampus dependent memory through decreasing synaptic zinc release and BDNF deficit.

full article online on plos.org

http://journals.plos.org/plosgenetics/article?id=info:doi/10.1371/journal.pgen.1006407

http://www.haaretz.com/israel-news/science/1.755560

>Energy Metabolism Genes Expressed Differently in Africans, non-Africans

>Change helped the shivering humans-out-of-Africa survive in European conditions, postulate scientists from Ben-Gurion University.

>Objectives. To report characteristics of sexual minority US inmates.

>Methods. We drew our data from the National Inmate Survey, 2011–2012, a probability sample of inmates in US prisons and jails. We determined weighted proportions and odds ratios with 95% confidence intervals to estimate differences between sexual minority and heterosexual inmates.

>Results. Sexual minorities (those who self-identify as lesbian, gay, or bisexual or report a same-sex sexual experience before arrival at the facility) were disproportionately incarcerated: 9.3% of men in prison, 6.2% of men in jail, 42.1% of women in prison, and 35.7% of women in jail were sexual minorities. The incarceration rate of self-identified lesbian, gay, or bisexual persons was 1882 per 100 000, more than 3 times that of the US adult population. Compared with straight inmates, sexual minorities were more likely to have been sexually victimized as children, to have been sexually victimized while incarcerated, to have experienced solitary confinement and other sanctions, and to report current psychological distress.

>Many evolutionary psychologists have asserted that there is a panhuman nature, a species typical psychological structure that is invariant across human populations. Although many social scientists dispute the basic assumptions of evolutionary psychology, they seem widely to agree with this hypothesis. Psychological differences among human populations (demes, ethnic groups, races) are almost always attributed to cultural and sociological forces in the relevant literatures. However, there are strong reasons to suspect that the hypothesis of a panhuman nature is incorrect. Humans migrated out of Africa at least 50,000 years ago and occupied many different ecological and climatological niches. Because of this, they evolved slightly different anatomical and physiological traits. For example, Tibetans evolved various traits that help them cope with the rigors of altitude; similarly, the Inuit evolved various traits that help them cope with the challenges of a very cold environment. It is likely that humans also evolved slightly different psychological traits as a response to different selection pressures in different environments and niches. One possible example is the high intelligence of the Ashkenazi Jewish people. Frank discussions of such differences among human groups have provoked strong ethical concerns in the past. We understand those ethical concerns and believe that it is important to address them. However, we also believe that the benefits of discussing possible human population differences outweigh the costs.

>Human populations living in Eurasia during the Holocene experienced considerable microevolutionary change. It has been predicted that the transition of Holocene populations into agrarianism and urbanization brought about culture-gene co-evolution that favored via directional selection genetic variants associated with high general cognitive ability (GCA). To examine whether GCA might have risen during the Holocene, we compare a sample of 99 ancient genomes (ranging from 4.56 to 1.21 kyr BP) with a sample of 503 modern European genomes, using three different cognitive polygenic scores. Significant differences favoring the modern genomes were found for all three polygenic scores (Odds Ratios=0.92, p-0.037; 0.81, p=0.001 and 0.81, p=0.02). Furthermore, a significant increase in positive allele count over 3.25 kyr was found using a subsample of 66 ancient genomes (r=0.217, p one tailed = 0.04). These observations are consistent with the expectation that GCA rose during the Holocene.

>For over a century, social scientists have predicted declines in religious beliefs and their replacement with more scientific/naturalistic outlooks, a prediction known as the secularization hypothesis. However, skepticism surrounding this hypothesis has been expressed by some researchers in recent decades. After reviewing the pertinent evidence and arguments, we examined some aspects of the secularization hypothesis from what is termed a biologically informed perspective. Based on large samples of college students in Malaysia and the USA, religiosity, religious affiliation, and parental fertility were measured using self-reports. Three religiosity indicators were factor analyzed, resulting in an index for religiosity. Results reveal that average parental fertility varied considerably according to religious groups, with Muslims being the most religious and the most fertile and Jews and Buddhists being the least. Within most religious groupings, religiosity was positively associated with parental fertility. While cross-sectional in nature, when our results are combined with evidence that both religiosity and fertility are substantially heritable traits, findings are consistent with view that earlier trends toward secularization (due to science education surrounding advancements in science) are currently being counter-balanced by genetic and reproductive forces. We also propose that the inverse association between intelligence and religiosity, and the inverse correlation between intelligence and fertility lead to predictions of a decline in secularism in the foreseeable future. A contra-secularization hypothesis is proposed and defended in the discussion. It states that secularism is likely to undergo a decline throughout the remainder of the twenty-first century, including Europe and other industrial societies.

>>4958

This one looks interesting. Thanks for uploading all these, this is a good thread.

dropping Ethnic Cleansing Manual here for crossboard linking

>Evolutionary neuroandrogenic (ENA) theory asserts that brain exposed to androgens plus the brain's ability to learn accounts for most of the sex and age variations in criminal behavior. Here, the theory is extended to explain race/ethnic variations in offending. The article documents that among seven different racial/ethnic groups, blacks have the highest and East Asians have the lowest criminal involvement. Strictly social environmental explanations for race/ethnic differences in criminality appear to be inadequate for explaining these differences. Two main elements of ENA theory are offered in the present context: (a) criminal behavior is promoted by exposing the brain to testosterone and other androgens. (b) rapid postpubertal declines in offending depend heavily on learning ability. Ten lines of evidence concerning average racial/ethnic variations in androgen exposure are reviewed, and four lines of evidence of racial/ethnic differences in learning ability are reviewed. With some exceptions and qualifications, currently-available evidence seems to support the idea that racial/ethnic variations in offending could be at least partially explained by ENA theory. Closing comments are offered to suggest that biosocial approaches to the study of racial/ethnic variations in criminal behavior can help to supplement strictly social environmental theories in criminology.

>Most of our understanding of the genetic basis of human adaptation is biased toward loci of large phenotypic effect. Genome wide association studies (GWAS) now enable the study of genetic adaptation in highly polygenic phenotypes. Here we test for polygenic adaptation among 187 world- wide human populations using polygenic scores constructed from GWAS of 34 complex traits. By comparing these polygenic scores to a null distribution under genetic drift, we identify strong signals of selection for a suite of anthropometric traits including height, infant head circumference (IHC), hip circumference (HIP) and waist-to-hip ratio (WHR), as well as type 2 diabetes (T2D). In addition to the known north-south gradient of polygenic height scores within Europe, we find that natural selection has contributed to a gradient of decreasing polygenic height scores from West to East across Eurasia, and that this gradient is consistent with selection on height in ancient populations who have contributed ancestry broadly across Eurasia. We find that the signal of selection on HIP can largely be explained as a correlated response to selection on height. However, our signals in IHC and WC/WHR cannot, suggesting a response to selection along multiple axes of body shape variation. Our observation that IHC, WC, and WHR polygenic scores follow a strong latitudinal cline in Western Eurasia support the role of natural selection in establishing Bergmann's Rule in humans, and are consistent with thermoregulatory adaptation in response to latitudinal temperature variation.

>>6137

too much whining imo, should have more how-to and less rants

>This study identifies and analyzes statistically significant overlaps between selective sweep screens in anatomically modern humans and several domesticated species. The results obtained suggest that (paleo-)genomic data can be exploited to complement the fossil record and support the idea of self-domestication in Homo sapiens, a process that likely intensified as our species populated its niche. Our analysis lends support to attempts to capture the “domestication syndrome” in terms of alterations to certain signaling pathways and cell lineages, such as the neural crest.

>Before their disappearance from the fossil record approximately 40,000 years ago, Neanderthals, the ancient hominin lineage most closely related to modern humans, interbred with ancestors of present-day humans. The legacy of this gene flow persists through Neanderthal-derived variants that survive in modern human DNA; however, the neural implications of this inheritance are uncertain. Here, using MRI in a large cohort of healthy individuals of European-descent, we show that the amount of Neanderthal-originating polymorphism carried in living humans is related to cranial and brain morphology. First, as a validation of our approach, we demonstrate that a greater load of Neanderthal-derived genetic variants (higher “NeanderScore”) is associated with skull shapes resembling those of known Neanderthal cranial remains, particularly in occipital and parietal bones. Next, we demonstrate convergent NeanderScore-related findings in the brain (measured by gray- and white-matter volume, sulcal depth, and gyrification index) that localize to the visual cortex and intraparietal sulcus. This work provides insights into ancestral human neurobiology and suggests that Neanderthal-derived genetic variation is neurologically functional in the contemporary population.

>We tested whether conservatives and liberals are similarly or differentially likely to deny scientific claims that conflict with their preferred conclusions. Participants were randomly assigned to read about a study with correct results that were either consistent or inconsistent with their attitude about one of several issues (e.g., carbon emissions). Participants were asked to interpret numerical results and decide what the study concluded. After being informed of the correct interpretation, participants rated how much they agreed with, found knowledgeable, and trusted the researchers’ correct interpretation. Both liberals and conservatives engaged in motivated interpretation of study results and denied the correct interpretation of those results when that interpretation conflicted with their attitudes. Our study suggests that the same motivational processes underlie differences in the political priorities of those on the left and the right.

>One of the major adaptations during the evolution of Homo sapiens was an increase in brain size. Here we present evidence that a significant and substantial proportion of variation in brain size may be related to changes in temperature. Based on a sample of 109 fossilized hominid skulls, we found that cranial capacities were highly correlated with paleoclimatic changes in temperature, as indexed by oxygen isotope data and sea-surface temperature. Indeed, as much as 52% of the variance in the cranial capacity of these skulls could be accounted for by temperature variation at 100 ka intervals. As an index of more short-term seasonal fluctuations in temperature, we examined the latitude of the sites from which the crania originated. More than 22% of the variance in cranial capacity of these skulls could be accounted for by variation in equatorial distance.

>It is a paradox that males have a larger average brain size than females, that brain size is positively associated with intelligence, and yet numerous experts have asserted that there is no sex difference in intelligence. This paper presents the developmental theory of sex differences in intelligence as a solution to this problem. This states that boys and girls have about the same IQ up to the age of 15 years but from the age of 16 the average IQ of males becomes higher than that of females with an advantage increasing to approximately 4 IQ points in adulthood.

>Gender differences exist in abilities, interests, and occupations. According to the Empathizing-Systemizing theory, the reason for all gender differences lies in the relative weights of two cognitive processes: women empathize more, which is useful in understanding people, while men systemize more, which means interpreting phenomena as rule-based systems. The terms “male and female brain type” refer to a heightened preference for one process over the other. We aimed to find out whether the gender atypical groups of male brain type women and female brain type men are more similar to the opposite sex than to their own in terms of a range of social, cognitive and personality variables. Female and male brain type groups were identified and compared within both genders in an online study (N = 2983). The results show there are female brain type men and male brain type women, who are characterized by qualities more often associated with the opposite sex, and who have not been reached by prior research. Thus, these findings demonstrate that cognitive type is a more powerful predictor of certain characteristics than is biological sex.

>Execution, Violent Punishment and Selection for Religiousness in Medieval England

Frost and Harpending, Evolutionary Psychology,

13 (2015), have argued that the increasing use of capital punishment

across the Middle Ages in Europe altered the genotype,

helping to create a less violent and generally more lawabiding

population. Developing this insight, we hypothesise

that the same system of violent punishments would also have

helped to genotypically create a more religious society by

indirectly selecting for religiousness, through the execution

of men who had not yet sired any offspring. We estimate the

selection differential for religiousness based on genetic correlation

data for conceivably related traits, and compare that to

the actual increase in religiosity across the Middle Ages. We

further explore other mechanisms by which religiousness was

being selected for in Medieval England, and conclude that

executions most likely contributed substantially to the increase

in religiosity, but that other selection pressures also

played a role.

>Evidence from the American Time Use Survey 2003-12 suggests the existence of small but statistically significant racial/ethnic differences in time spent not working at the workplace. Minorities, especially men, spend a greater fraction of their workdays not working than do white non-Hispanics. These differences are robust to the inclusion of large numbers of demographic, industry, occupation, time and geographic controls. They do not vary by union status, public-private sector attachment, pay method or age; nor do they arise from the effects of equal-employment enforcement or geographic differences in racial/ethnic representation. The findings imply that measures of the adjusted wage disadvantages of minority employees are overstated by about 10 percent.

>This research utilises a content analysis methodology to examine the issue of male rape among prison populations within the United States. The physical and psychological aspects of rape are described by professionals, victims, and aggressors. The inmate terminology related to prison rape such as Punk and Jocker are defined to show the social structure of the prison sexual subculture. Previous theories of prison rape concerning racism, power, and sexual deprivation are discussed and analysed. Racism perpetrated against white inmates by black inmates is indicated to be the single causal factor in prison rape. Both quantitative and qualitative data indicate a prevalence of predominantly black rapists and white victims nationwide for the last 40 years. The controversial issues of conjugal visits, home furlough release, or allowing homosexual behaviour in prisons are debated as possible solutions to remedy prison sexual assault. The debate concerning the issuance of condoms in prison to prevent the transmission of the AIDS or HIV virus during rape attacks is discussed. The inmate classification system is presented as one viable solution to reduce the number of prison rapes. The scheme of inmate classification is to identify violent sexual aggressors and separate them from the general non-violent prison population. The author also considers separation by racial and ethnic categories since literary evidence shows ‘black racism’ to be the common denominator in most prison sexual assaults and rapes of predominantly white inmates.

>We consider the conditions of peace and violence among ethnic groups, testing a theory designed to predict the locations of violence and interventions that can promote peace. Characterizing the model's success in predicting peace requires examples where peace prevails despite diversity. Switzerland is recognized as a country of peace, stability and prosperity. This is surprising because of its linguistic and religious diversity that in other parts of the world lead to conflict and violence. Here we analyze how peaceful stability is maintained. Our analysis shows that peace does not depend on integrated coexistence, but rather on well defined topographical and political boundaries separating groups, allowing for partial autonomy within a single country. In Switzerland, mountains and lakes are an important part of the boundaries between sharply defined linguistic areas. Political canton and circle (sub-canton) boundaries often separate religious groups. Where such boundaries do not appear to be sufficient, we find that specific aspects of the population distribution guarantee either sufficient separation or sufficient mixing to inhibit intergroup violence according to the quantitative theory of conflict. In exactly one region, a porous mountain range does not adequately separate linguistic groups and that region has experienced significant violent conflict, leading to the recent creation of the canton of Jura. Our analysis supports the hypothesis that violence between groups can be inhibited by physical and political boundaries. A similar analysis of the area of the former Yugoslavia shows that during widespread ethnic violence existing political boundaries did not coincide with the boundaries of distinct groups, but peace prevailed in specific areas where they did coincide. The success of peace in Switzerland may serve as a model to resolve conflict in other ethnically diverse countries and regions of the world.

>A prominent hypothesis in the study of intelligence is that genetic influences on cognitive abilities are larger for children raised in more advantaged environments. Evidence to date has been mixed, with some indication that the hypothesized pattern may hold in the United States but not elsewhere. We conducted the largest study to date using matched birth and school administrative records from the socioeconomically diverse state of Florida, and we did not find evidence for the hypothesis.

>Accurate understanding of environmental moderation of genetic influences is vital to advancing the science of cognitive development as well as for designing interventions. One widely reported idea is increasing genetic influence on cognition for children raised in higher socioeconomic status (SES) families, including recent proposals that the pattern is a particularly US phenomenon. We used matched birth and school records from Florida siblings and twins born in 1994–2002 to provide the largest, most population-diverse consideration of this hypothesis to date. We found no evidence of SES moderation of genetic influence on test scores, suggesting that articulating gene-environment interactions for cognition is more complex and elusive than previously supposed.

>Do human societies from around the world exhibit similarities in the way that they are structured, and show commonalities in the ways that they have evolved? These are long-standing questions that have proven difficult to answer. To test between competing hypotheses, we constructed a massive repository of historical and archaeological information known as “Seshat: Global History Databank.” We systematically coded data on 414 societies from 30 regions around the world spanning the last 10,000 years. We were able to capture information on 51 variables reflecting nine characteristics of human societies, such as social scale, economy, features of governance, and information systems. Our analyses revealed that these different characteristics show strong relationships with each other and that a single principal component captures around three-quarters of the observed variation. Furthermore, we found that different characteristics of social complexity are highly predictable across different world regions. These results suggest that key aspects of social organization are functionally related and do indeed coevolve in predictable ways. Our findings highlight the power of the sciences and humanities working together to rigorously test hypotheses about general rules that may have shaped human history.

http://jasss.soc.surrey.ac.uk/16/3/7.html

>Recent agent-based computer simulations suggest that ethnocentrism, often thought to rely on complex social cognition and learning, may have arisen through biological evolution. From a random start, ethnocentric strategies dominate other possible strategies (selfish, traitorous, and humanitarian) based on cooperation or non-cooperation with in-group and out-group agents. Here we show that ethnocentrism eventually overcomes its closest competitor, humanitarianism, by exploiting humanitarian cooperation across group boundaries as world population saturates. Selfish and traitorous strategies are self-limiting because such agents do not cooperate with agents sharing the same genes. Traitorous strategies fare even worse than selfish ones because traitors are exploited by ethnocentrics across group boundaries in the same manner as humanitarians are, via unreciprocated cooperation. By tracking evolution across time, we find individual differences between evolving worlds in terms of early humanitarian competition with ethnocentrism, including early stages of humanitarian dominance. Our evidence indicates that such variation, in terms of differences between humanitarian and ethnocentric agents, is normally distributed and due to early, rather than later, stochastic differences in immigrant strategies.

>For a long time, many social scientists were convinced that Conservatives were more biased and more in need of explaining than Liberals. However, recent scholarship has challenged this assumption, contending that the predominance of Liberals in the social sciences might have caused social science to view Conservatives unfairly as alien and abnormal and Liberals as unbiased and "normal." Here, we build on this work, arguing that one potent source of liberal bias-perceived victims' groups-has remained largely unstudied. We argue that most Liberals are cosmic egalitarians, that is, they believe that (especially ethnic) demographic groups do not differ biologically on socially valued traits (e.g., math ability, IQ, self-control). This, when coupled with a sacred narrative about protecting perceived victims' groups (e.g., Blacks, Hispanics, Muslims, Women), leads to bias against any challenge to cosmic egalitarianism that appears to cast a perceived privileged group (e.g., men) in a more favorable light than a perceived victims' group (e.g., women). We support our theory with X studies, which show that Liberals, but not Conservatives, evaluate information in a biased manner when that information portrays perceived victims' groups or perceived privileged groups as superior on a socially valued trait. We argue that this bias is due to a liberal trait we call Equalitarianism.

>Although past research suggests authoritarianism may be a uniquely right-wing phenomenon, the present two studies tested the hypothesis that authoritarianism exists in both right-wing and left-wing contexts in essentially equal degrees. Across two studies, university (n 5 475) and Mechanical Turk (n 5 298) participants completed either the RWA (right-wing authoritarianism) scale or a newly developed (and parallel) LWA (left-wing authoritarianism) scale. Participants further completed measurements of ideology and three domain-specific scales: prejudice, dogmatism, and attitude strength. Findings from both studies lend support to an authoritarianism symmetry hypothesis: Significant positive correlations emerged between LWA and measurements of liberalism, prejudice, dogmatism, and attitude strength. These results largely paralleled those correlating RWA with identical conservative-focused measurements, and an overall effect-size measurement showed LWA was similarly related to those constructs (compared to RWA) in both Study 1 and Study 2. Taken together, these studies provide evidence that LWA may be a viable construct in ordinary U.S. samples.

love the articles, but please note some of them are discredited, one of them is emil kirkegaard who has 0 credibility, he might as well be sargon of akkad

>>8379

>emil kirkegaard who has 0 credibility, he might as well be sargon of akkad

>Culture–gene coevolutionary theory posits that cultural values have evolved, are adaptive and influence the social and physical environments under which genetic selection operates. Here, we examined the association between cultural values of individualism–collectivism and allelic frequency of the serotonin transporter functional polymorphism (5-HTTLPR) as well as the role this culture–gene association may play in explaining global variability in prevalence of pathogens and affective disorders. We found evidence that collectivistic cultures were significantly more likely to comprise individuals carrying the short (S) allele of the 5-HTTLPR across 29 nations. Results further show that historical pathogen prevalence predicts cultural variability in individualism–collectivism owing to genetic selection of the S allele. Additionally, cultural values and frequency of S allele carriers negatively predict global prevalence of anxiety and mood disorder. Finally, mediation analyses further indicate that increased frequency of S allele carriers predicted decreased anxiety and mood disorder prevalence owing to increased collectivistic cultural values. Taken together, our findings suggest culture–gene coevolution between allelic frequency of 5-HTTLPR and cultural values of individualism–collectivism and support the notion that cultural values buffer genetically susceptible populations from increased prevalence of affective disorders. Implications of the current findings for understanding culture–gene coevolution of human brain and behaviour as well as how this coevolutionary process may contribute to global variation in pathogen prevalence and epidemiology of affective disorders, such as anxiety and depression, are discussed.

>Most decisions about policy adoption require preference aggregation, which makes it difficult to determine how and when an individual can influence policy change. Examining how frequently a judge is cited offers insight into this question. Drawing upon the psychological concept of social identity, we suggest that shared group memberships can account for differences in policy influence. We investigate this possibility using the demographic and professional group memberships of federal circuit court judges and an original dataset of citations among all published search and seizure cases from federal circuit courts from 1990 to 2010. The results indicate that shared professional characteristics do tend to lead to ingroup favoritism in citation decisions while only partial evidence of such a pattern emerges for demographic group memberships. There is evidence of ingroup favoritism among female and minority judges but none for male or white judges. Overall, judges appear to generally have greater influence on judges with shared characteristics. The findings have vital implications for our understanding of the diversification of policy-making institutions.

> Many modern human genomes retain DNA inherited from interbreeding with archaic hominins, such as Neandertals, yet the influence of this admixture on human traits is largely unknown. We analyzed the contribution of common Neandertal variants to over 1000 electronic health record (EHR)–derived phenotypes in ~28,000 adults of European ancestry. We discovered and replicated associations of Neandertal alleles with neurological, psychiatric, immunological, and dermatological phenotypes. Neandertal alleles together explained a significant fraction of the variation in risk for depression and skin lesions resulting from sun exposure (actinic keratosis), and individual Neandertal alleles were significantly associated with specific human phenotypes, including hypercoagulation and tobacco use. Our results establish that archaic admixture influences disease risk in modern humans, provide hypotheses about the effects of hundreds of Neandertal haplotypes, and demonstrate the utility of EHR data in evolutionary analyses.

>Assessing the genetic contribution of Neanderthals to non-disease phenotypes in modern humans has been difficult because of the absence of large cohorts for which common phenotype information is available. Using baseline phenotypes collected for 112,000 individuals by the UK Biobank, we can now elaborate on previous findings that identified associations between signatures of positive selection on Neanderthal DNA and various modern human traits but not any specific phenotypic consequences. Here, we show that Neanderthal DNA affects skin tone and hair color, height, sleeping patterns, mood, and smoking status in present-day Europeans. Interestingly, multiple Neanderthal alleles at different loci contribute to skin and hair color in present-day Europeans, and these Neanderthal alleles contribute to both lighter and darker skin tones and hair color, suggesting that Neanderthals themselves were most likely variable in these traits.

>Almost a decade ago, the sequencing of ancient DNA from archaic humans - Neanderthals and Denisovans - revealed that modern and archaic humans interbred at least twice during the Pleistocene. The field of human paleogenomics has now turned its attention towards understanding the nature of this genetic legacy in the gene pool of present-day humans. What exactly did modern humans obtain from interbreeding with Neanderthals and Denisovans? Were introgressed genetic material beneficial, neutral or maladaptive? Can differences in phenotypes among present-day human populations be explained by archaic human introgression? These questions are of prime importance for our understanding of recent human evolution, but will require careful computational modeling and extensive functional assays before they can be answered in full. Here, we review the recent literature characterizing introgressed DNA and the likely biological consequences for their modern human carriers. We focus particularly on archaic human haplotypes that were beneficial to modern humans as they expanded across the globe, and on ways to understand how populations harboring these haplotypes evolved over time.

https://www.nature.com/articles/d41586-018-03773-6

>Divided by DNA: The (((uneasy relationship))) between archaeology and ancient genomics

>Two fields in the midst of a technological revolution are struggling to reconcile their views of the past.

>…To many, the idea that people linked to Corded Ware had replaced Neolithic groups in Western Europe was eerily reminiscent of the ideas of Gustaf Kossinna, the early-twentieth-century German archaeologist who had connected Corded Ware culture to the people of modern Germany and promoted a ‘Risk board’ view of prehistory known as settlement archaeology. The idea later fed into Nazi ideology.

>(((David Reich))) - Who We Are and How We Got Here: Ancient DNA and the New Science of the Human Past (2018)

http://gen.lib.rus.ec/book/index.php?md5=9615AAE062FCFED3678A29216AFD1E1F

>Here is a groundbreaking book about how the extraction of ancient DNA from ancient bones has profoundly changed our understanding of human prehistory while resolving many long-standing controversies.

>Massive technological innovations now allow scientists to extract and analyze ancient DNA as never before, and it has become clear—in part from David Reich's own contributions to the field—that genomics is as important a means of understanding the human past as archeology, linguistics, and the written word. In Who We Are and How We Got Here, Reich describes with unprecedented clarity just how the human genome provides not only all the information that a fertilized human egg needs to develop but also contains within it the history of our species. He explains how the genomic revolution and ancient DNA are transforming our understanding of the lineage of modern humans and how DNA studies reveal the deep history of inequality—among different populations, between the sexes, and among individuals within a population. His book gives the lie to the orthodoxy that there are no meaningful biological differenced among human populations, and at the same time uses the definitive evidence provided by genomics to show that the differences that do exist are unlikely to conform to familiar stereotypes.

>Here we report the Simons Genome Diversity Project data set: high quality genomes from 300 individuals from 142 diverse populations. These genomes include at least 5.8 million base pairs that are not present in the human reference genome. Our analysis reveals key features of the landscape of human genome variation, including that the rate of accumulation of mutations has accelerated by about 5% in non-Africans compared to Africans since divergence. We show that the ancestors of some pairs of present-day human populations were substantially separated by 100,000 years ago, well before the archaeologically attested onset of behavioural modernity. We also demonstrate that indigenous Australians, New Guineans and Andamanese do not derive substantial ancestry from an early dispersal of modern humans; instead, their modern human ancestry is consistent with coming from the same source as that of other non-Africans.

>>8582

does reich think ethnic groups differ in IQ?

>>8770

>does reich think ethnic groups differ in IQ?

Probably, but he wouldn't admit it for careerist and political reasons. Greg Cochran has written a series of articles on his blog reviewing Reich's book:

https://www.google.com/search?q=site%3Awesthunt.wordpress.com%2F+Reich+%22Who+We+Are%22

>Reich’s book, Who We Are and How We Got Here, is really two books. The first is an exposition of his excellent work using ancient DNA to understand prehistory. The second is about the impact of advances in genetics on our understanding of social issues, such as various forms of inequality and racial differences. It’s not obvious why that second book was written. It’s not his specialty, and it’s far more controversial. Which for sure doesn’t bother me, but might not be a good thing for Reich. Nor is it as good a book. While saying true things that would, if properly understood by the usual gang of idiots, get him into serious trouble, the book is interspersed with non sequiturs, falsehoods, and unjust attacks on people who committed the deadly sin of prematurely coming to the same general conclusions he has. It’s possible that he felt the need to cloak his general line of thought with clouds of toxic squid ink. I don’t much care what his reasons were: I’m going to praise and explain when he’s right, argue with him when I think he’s wrong, kick him in the goolies when he’s being a prick.

>This paper investigates the claim that colonial history has left an enduring imprint on Africa's institutional and economic development. The literature following Acemoglu, Johnson and Robinson (2001) and Sokoloff and Engerman (2000) maintains that different types of colonialism affected the institutional environment differently, and that path-dependence subsequently ensures that these institutional differences and their impact on economic performance are persistent over time. By tracing the impact of colonial institutions on contemporary institutions over time, I show that – in contrast to claims in this literature – the relevance of colonial legacies to institutional quality and to per capita income is rapidly disappearing in Africa. Differences in institutional quality or income are explained less and less by colonial legacy, while there is some evidence that precolonial social and geographical circumstances are becoming more important. I conclude that while colonialism has affected African institutional and economic development significantly, this impact is not persistent. Rather, the evidence suggests that colonialism has created a large but very temporary institutional shock, after which a long-run equilibrium is being restored.

>Marriage practices in Northwest Europe are unique among societies with intensive agriculture. Critically, married couples were freely chosen non-relatives who set up their households independently of their parents and their extended families; households typically including nonrelatives and were established only afer achieving economic viability. This in turn required greater planning and self-control prior to marriage, and resulted in greater husband-wife partnership than is typical when marriage is embedded within extended kinship networks (i.e., joint family structure—a form of collectivism paradigmatically occurring in the Middle East). A standard view among historians is that this marriage regime was a response to the unique context afer the fall of the Roman Empire in which lords were forced to give incentives to laborers. This hypothesis is rejected for several reasons: 1. there are strong currents of individualism in Indo-European culture long predating the post-Roman period; 2. the manorial system of the post-Roman world was remarkably similar to the prevailing practices of Germanic tribes during the Roman period; 3. individualist families have several disadvantages compared to collectivist families, including later generation time, uncertain inheritance, greater likelihood of sexual assault prior to marriage in households composed of non-relatives—thus making it unlikely to be freely chosen because of incentives provided by lords. This is compatible with a theory that European individualism results from genetically based tendencies resulting in a misft with medieval environments compared to collectivist family structure. Data are reviewed indicating that the most extreme forms of individualism occur in Scandinavian societies, implying a cline in individualism from southeast to northwest. In conclusion, an ethnically based northwest-southeast gradient is proposed as the main variable in explaining variation in family structure within Western Europe. However, viewed in broader terms—in comparison, say, to the Middle East—all of Europe, including Eastern Europe, is relatively individualistic.

>Ambient temperature is a critical environmental factor for all living organisms. It was likely an important selective force as modern humans recently colonized temperate and cold Eurasian environments. Nevertheless, as of yet we have limited evidence of local adaptation to ambient temperature in populations from those environments. To shed light on this question, we exploit the fact that humans are a cosmopolitan species that inhabit territories under a wide range of temperatures. Focusing on cold perception–which is central to thermoregulation and survival in cold environments–we show evidence of recent local adaptation on TRPM8. This gene encodes for a cation channel that is, to date, the only temperature receptor known to mediate an endogenous response to moderate cold. The upstream variant rs10166942 shows extreme population differentiation, with frequencies that range from 5% in Nigeria to 88% in Finland (placing this SNP in the 0.02% tail of the FST empirical distribution). When all populations are jointly analyzed, allele frequencies correlate with latitude and temperature beyond what can be explained by shared ancestry and population substructure. Using a Bayesian approach, we infer that the allele originated and evolved neutrally in Africa, while positive selection raised its frequency to different degrees in Eurasian populations, resulting in allele frequencies that follow a latitudinal cline. We infer strong positive selection, in agreement with ancient DNA showing high frequency of the allele in Europe 3,000 to 8,000 years ago. rs10166942 is important phenotypically because its ancestral allele is protective of migraine. This debilitating disorder varies in prevalence across human populations, with highest prevalence in individuals of European descent–precisely the population with the highest frequency of rs10166942 derived allele. We thus hypothesize that local adaptation on previously neutral standing variation may have contributed to the genetic differences that exist in the prevalence of migraine among human populations today.

>The human pelvis is often described as an evolutionary compromise (obstetrical dilemma) between the requirements of efficient bipedal locomotion and safe parturition of a highly encephalized neonate, that has led to a tight fit between the birth canal and the head and body of the foetus. Strong evolutionary constraints on the shape of the pelvis can be expected under this scenario. On the other hand, several studies have found a significant level of pelvic variation within and between human populations, a fact that seems to contradict such expectations. The advantages of a narrow pelvis for locomotion have recently been challenged, suggesting that the tight cephalo‐pelvic fit might not stem from the hypothesized obstetrical dilemma. Moreover, the human pelvis appears to be under lower constraints and to have relatively higher evolvability than other closely related primates. These recent findings substantially change the way in which we interpret variation in the human pelvis, and help make sense of the high diversity in pelvic shape observed within and among modern populations. A lower magnitude of covariance between functionally important regions ensured that a wide range of morphological variation was available within populations, enabling natural selection to generate pelvic variation between populations living in different environments. Neutral processes such as genetic drift and differential migration also contributed to shaping modern pelvic diversity during and after the expansion of humans into and across the various continents.

>There are mean differences in complex traits among global human populations. We hypothesize that part of the phenotypic differentiation is due to natural selection. To address this hypothesis, we assess the differentiation in allele frequencies of trait-associated SNPs among African, Eastern Asian, and European populations for ten complex traits using data of large sample size (up to ~405,000). We show that SNPs associated with height (P=2.46×10−5), waist-to-hip ratio (P=2.77×10−4), and schizophrenia (P=3.96×10−5) are significantly more differentiated among populations than matched “control” SNPs, suggesting that these trait-associated SNPs have undergone natural selection. We further find that SNPs associated with height (P=2.01×10−6) and schizophrenia (P=5.16×10−18) show significantly higher variance in linkage disequilibrium (LD) scores across populations than control SNPs. Our results support the hypothesis that natural selection has shaped the genetic differentiation of complex traits, such as height and schizophrenia, among worldwide populations.

>There are national differences in scientific activity that are not well accounted for by economic and intellectual factors alone. We examine the novel hypothesis that androgen levels may also play a role. Androgens are often referred to as male hormones, but are present in both men and women, and have been linked to performance in other domains, such as sports and entrepreneurship. National-level empirical data on scientific productivity, in terms of numbers of publications, and science Nobel laureates were compared to seven national-level androgen indicators; namely androgenic body hair, the length of the CAG repeat on the androgen receptor gene, prostate cancer incidence, male and female 2D:4D finger ratio, and sex frequency and number of partners. The majority of these indicators were associated in the expected direction with per capita number of scientific publications and Nobel prizes. Moreover, several indicators significantly interacted with national-level estimates of intelligence, such that androgen levels are related to measures of the scientific achievement only when the level of intelligence is relatively high. These findings may partly explain the global distribution of scientific productivity, achievements, and Nobel prizes.

>Why should mitochondria define species?

>More than a decade of DNA barcoding encompassing about five million specimens covering 100,000 animal species supports the generalization that mitochondrial DNA clusters largely overlap with species as defined by domain experts. Most barcode clustering reflects synonymous substitutions. What evolutionary mechanisms account for synonymous clusters being largely coincident with species? The answer depends on whether variants are phenotypically neutral. To the degree that variants are selectable, purifying selection limits variation within species and neighboring species have distinct adaptive peaks. Phenotypically neutral variants are only subject to demographic processes: drift, lineage sorting, genetic hitchhiking, and bottlenecks. The evolution of modern humans has been studied from several disciplines with detail unique among animal species. Mitochondrial barcodes provide a commensurable way to compare modern humans to other animal species. Barcode variation in the modern human population is quantitatively similar to that within other animal species. Several convergent lines of evidence show that mitochondrial diversity in modern humans follows from sequence uniformity followed by the accumulation of largely neutral diversity during a population expansion that began approximately 100,000 years ago. A straightforward hypothesis is that the extant populations of almost all animal species have arrived at a similar result consequent to a similar process of expansion from mitochondrial uniformity within the last one to several hundred thousand years.

http://www.techtimes.com/articles/228798/20180530/massive-genetic-study-reveals-90-percent-of-earth-s-animals-appeared-at-the-same-time.htm

>>8580

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5430617/

>A recent study conducted the first genome-wide scan for selection in Inuit from Greenland using single nucleotide polymorphism chip data. Here, we report that selection in the region with the second most extreme signal of positive selection in Greenlandic Inuit favored a deeply divergent haplotype that is closely related to the sequence in the Denisovan genome, and was likely introgressed from an archaic population. The region contains two genes, WARS2 and TBX15, and has previously been associated with adipose tissue differentiation and body-fat distribution in humans. We show that the adaptively introgressed allele has been under selection in a much larger geographic region than just Greenland. Furthermore, it is associated with changes in expression of WARS2 and TBX15 in multiple tissues including the adrenal gland and subcutaneous adipose tissue, and with regional DNA methylation changes in TBX15

>The other region contains WARS2 and TBX15, located on chromosome 1. WARS2 encodes the mitochondrial tryptophanyl-tRNA synthetase. TBX15 is a transcription factor from the T-box family and is a highly pleotropic gene expressed in multiple tissues at different stages of development. It is required for skeletal development and deletions in this gene cause Cousin syndrome, whose symptoms include craniofacial dysmorphism and short stature. TBX15 also plays a role in the differentiation of brown and brite adipocytes. Brown and brite adipocytes produce heat via lipid oxidation when stimulated by cold temperatures, making TBX15 a strong candidate gene for adaptation to life in the Arctic. SNPs in or near both of these genes have also been associated with numerous phenotypes in GWAS studies – in particular waist-hip ratio and fat distribution in Europeans and ear morphology in Latin Americans.

>Multiple studies have shown extensive introgression of DNA from Neanderthals and Denisovans into modern humans. Many of the introgressed tracts have been shown to be of functional importance and may possibly be examples of adaptive introgression into humans, including several genes involved in immunity, several genes associated with skin pigmentation, and EPAS1, associated with high-altitude adaptation in Tibetans. Archaic humans have been hypothesized to be adapted to cold temperatures. Therefore, in this paper we examine if any of the selected genes in Inuit1 may have been introduced into the modern human gene pool via admixture from archaic humans, i.e. Neanderthals or Denisovans. We will show that the WARS2/TBX15 haplotype of high frequency in Greenlandic Inuit was likely introgressed from an archaic human population that was closely related to Denisovans. We will also show that the selection affecting this haplotype is relatively old, resulting in a high allele frequency in other New World populations and intermediate allele frequencies in East Asia. Finally, functional genomic analyses suggest that the selected archaic haplotype may affect the regulation of expression of TBX15 and WARS2, and is associated with phenotypes related to body fat distribution.

>>4110

http://gen.lib.rus.ec/book/index.php?md5=1EA5C0581A1D89EB36F565F2B0CF85AC

>Arthur R. Jensen - The g Factor: The Science of Mental Ability (1998)

>Jensen fully and clearly explains the psychometric, statistical, genetic, and physiological basis of g, as well as the major theoretical challenges to the concept. For decades a key construct in differential psychology, the g factor's significance for scholars and researchers in the brain sciences as well as education, sociology, anthropology, evolutionary psychology, economics, and public policy is clearly evident in this, the most comprehensive treatment of g ever published.

>What makes humans unique as a species and as individuals? Our uniqueness stems from language, tool use, reasoning, and other cognitive abilities that are largely mediated by specialized regions of the cerebral cortex. These regions of higher cognitive function have expanded disproportionately during human evolution (compared with nonhuman primates) and during postnatal maturation, when cortical surface area expands threefold between infancy and adulthood (1). Our uniqueness as individuals reflects countless differences in brain structure, function, and connectivity. One basic anatomical difference between similarly aged individuals is a more than 1.5-fold variation in total brain size (and total cortical volume) (2). On page 1222 of this issue, Reardon et al. (3) bring this aspect of individual variability under the umbrella of “differential scaling” by showing that human brains of different sizes do not scale uniformly across all regions. Rather, larger brains show greater expansion in regions associated with higher cognition and less expansion in regions associated with sensory, motor, and limbic (emotion- and affect-related) functions.

>Data are reported for intelligence of children in China assessed by the Combined Raven's Test in 1988, 1996 and 2006. The IQ of the samples increased by 15.0 IQ points over 18-year period. The British IQ of China in 1988 and 2006 is estimated as 94.8 and 109.8, respectively.

>The purpose of this study is to conduct a systematic review of the literature on the relationship between general cognitive ability and fertility among modern humans. Our goals were to (a) evaluate the state of the extant literature, and (b) provide a quantitative summary of effect sizes to the extent possible (given the limitations of the literature). A thorough search identified 17 unique datasets that passed the inclusion criteria. Using a Random Effects Model to evaluate the data, the overall weighted effect was r = −0.11, although the data also indicated a sex effect (stronger correlations among females than males), and a race effect (stronger correlations among Black and Hispanic populations compared to Whites). Importantly, the data suggest the correlation has been increasing in strength throughout the 20th century (and early 21st). Finally, we discovered several notable limitations of the extant literature; limitations that currently prohibit a psychometric meta-analysis. We discuss these issues with emphasis on improving future primary studies to allow for more effective meta-analytic investigations.

>Animal models of conflict behavior predict that an organism's behavior in a conflict situation is influenced by physical characteristics related to abilities to impose costs on adversaries. Stronger and larger organisms should be more motivated to seek larger shares of resources and higher places in hierarchies. Previous studies of human males have suggested that measures of upper‐body strength are associated with measures of support for inequality including Social Dominance Orientation (SDO), a measure of individual differences in support for group‐based hierarchies. However, other studies have failed to replicate this association. In this article, we reexamine the link between upper‐body strength and support for inequality using 12 different samples from multiple countries in which relevant measures were available. These samples include student and locally representative samples with direct measures of physical strength and nationally representative samples with self‐reported measures related to muscularity. While the predicted correlation does not replicate for every single available measure of support for inequality, the overall data pattern strongly suggests that for males, but not females, upper‐body strength correlates positively with support for inequality.

https://press.cern/press-releases/2018/09/statement-cern-stands-diversity

>CERN considers the presentation delivered by an invited scientist during a workshop on High Energy Theory and Gender as highly offensive. It has therefore decided to remove the slides from the online repository, in line with a Code of Conduct that does not tolerate personal attacks and insults.

judge for yourself

https://ideasanddata.wordpress.com/2018/04/24/the-jewish-question-an-empirical-examiniation/

blog post reviewing many studies and papers about jewish question

> Large genome-wide analysis of sexual orientation identifies for the first time variants associated with non-heterosexual behavior and reveals overlap with heterosexual reproductive traits.

http://archive.fo/B6o23

so far only the abstract is public

https://www.sciencemag.org/news/2018/10/giant-study-links-dna-variants-same-sex-behavior

>Andrea Ganna, a research fellow with the Broad Institute in Cambridge, Massachusetts, and Harvard Medical School in Boston, and colleagues examined data from hundreds of thousands of people who provided both DNA and behavioral information to two large genetic surveys, the UK Biobank study and the private genetics firm 23andMe. They analyzed DNA markers from people who answered either “yes” or “no” to the question, “Have you ever had sex with someone of the same sex?” In total, they identified 450,939 people who said their sexual relationships had been exclusively heterosexual and 26,890 people who reported at least one homosexual experience.

>The researchers performed a genome-wide association study (GWAS) in which they looked for specific variations in DNA that were more common in people who reported at least one same-sex sexual experience. They identified four such variants on chromosomes 7, 11, 12 and 15, respectively.

>Two variants were specific to men who reported same-sex sexual experience. One, a cluster of DNA on chromosome 15, has previously been found to predict male-pattern baldness. Another variant on chromosome 11 sits in a region rich with olfactory receptors. Ganna noted that olfaction is thought to play a large role in sexual attraction.

>The abstract for Ganna’s talk referenced another provocative result: Heterosexual people who possess these same four genetic variants tend to have more sexual partners, suggesting that associated genes might confer some mating advantage for heterosexuals. That could help explain why these variants might stick around in populations even if people attracted to the same sex tend to have fewer children than heterosexuals. Ganna did not touch on that finding in his talk, citing lack of time.

http://gen.lib.rus.ec/book/index.php?md5=77FB9ACB7CD6A107ADF0B308F52FA754

>Robert Plomin - Blueprint: How DNA Makes Us Who We Are

https://www.youtube.com/watch?v=koxSMz8jVXE

bbc hard talk with the author

>In The Mismeasure of Man, Stephen Jay Gould argued that the preconceived beliefs and biases of scientists influence their methods and conclusions. To show the potential consequences of this, Gould used examples from the early days of psychometrics and allied fields, arguing that inappropriate assumptions and an elitist desire to rank individuals and/or groups produced incorrect results. In this article, we investigate a section of The Mismeasure of Man in which Gould evaluated the Army Beta intelligence test for illiterate American draftees in World War I. We evaluated Gould’s arguments that the Army Beta (a) had inappropriate content, (b) had unsuitable administration conditions, (c) suffered from short time limits, and (d) could not have measured intelligence. By consulting the historical record and conducting a pre-registered replication of Gould’s administration of the test to a sample of college students, we show that Gould mischaracterized the Army Beta in a number of ways. Instead, the Army Beta was a well-designed test by the standards of the time, and all evidence indicates that it measured intelligence a century ago and can, to some extent, do so today.

>The relationship between biracial status, color, and crystallized intelligence was examined in a nationally representative sample of adult Black and White Americans. First, it was found that self-identifying biracial individuals, who were found to be intermediate in color and in self-reported ancestry, had intermediate levels of crystallized intelligence relative to self-identifying White (mostly European ancestry) and Black (mostly sub-Saharan African ancestry) Americans. The results were transformed to an IQ scale: White (M = 100.00, N = 7569), primarily White–biracial (M = 96.07, N = 43, primarily Black–biracial (M = 94.14 N = 50), and Black (M = 89.81, N = 1381). Next, among self-identifying African Americans, a statistically significant negative correlation of r = −0.102 (N = 637) was found between interviewer-rated darker facial color and vocabulary scores. After correction for the reliability of the measures, this correlation increased to r = −0.21. Corrections for the validity of color as an index of African ancestry would raise this correlation to around r = −0.48. This association among self-identifying African Americans was not accounted for by confounding factors, such as region of residence and interviewer race, or by parental socioeconomic status and individual educational attainment. In the multivariate models, the standardized betas for color and crystallized intelligence among African Americans ranged from β = −0.112 to β = −0.142. Based on the coefficients from the multivariate analysis, it was further found that cognitive ability was a significant mediator in the context of color and education, while education was not in the context of color and cognitive ability. It is concluded that these results further substantiate the statistical relation between intelligence and biogeographic ancestry in African and European American populations.

>Little published empirical research has investigated public support for eugenic policies. To add to this literature, a survey on attitudes about eugenic policies was conducted of participants from Amazon Mechanical Turk who indicated residence in the United States (N > 400). Survey items assessed the levels and correlates of support for policies that, among other things, encourage lower levels of reproduction among the poor, the unintelligent, and people who have committed serious crimes and encourage higher levels of reproduction among the wealthy and the intelligent. Analyses of responses indicated nontrivial support for most of the eugenic policies asked about, such as at least 40% support for policies encouraging lower levels of reproduction among poor people, unintelligent people, and people who have committed serious crimes. Support for the eugenic policies often associated with feelings about the target group and with the perceived heritability of the distinguishing trait of the target group. To the extent that this latter association reflects a causal effect of perceived heritability, increased genetic attributions among the public might produce increased public support for eugenic policies and increase the probability that such policies are employed.

>We assembled genome-wide data from 271 ancient Iberians, of whom 176 are from the largely unsampled period after 2000 BCE, thereby providing a high-resolution time transect of the Iberian Peninsula.We document high genetic substructure between northwestern and southeastern hunter-gatherers before the spread of farming.

>We reveal sporadic contacts between Iberia and North Africa by ~2500 BCE and, by ~2000 BCE, the replacement of 40% of Iberia’s ancestry and nearly 100% of its Y-chromosomes by people with Steppe ancestry.

>We show that, in the Iron Age, Steppe ancestry had spread not only into Indo-European–speaking regions but also into non-Indo-European–speaking ones, and we reveal that present-day Basques are best described as a typical Iron Age population without the admixture events that later affected the rest of Iberia. Additionally,we document how, beginning at least in the Roman period, the ancestry of the peninsula was transformed by gene flow from North Africa and the eastern Mediterranean.

>>11648

Took a quick look at these.

I don't really get why leftists claim that the idea of the white race is dumb, while at the same time declaring that a black race exists, even though sub Saharan African populations are nearly as ethnically diverse as European populations.

I know, anti whiteness, but still, it is just hypocrisy

>Rushton and Jensen argued that cognitive ability differs between human populations. But why are such differences expectable? Their answer: as modern humans spread out of Africa and into northern Eurasia, they entered colder and more seasonal climates that selected for the ability to plan ahead, in order to store food, make clothes, and build shelters for winter. This cold winter theory is supported by research on Paleolithic humans and recent hunter-gatherers. Tools become more diverse and complex as effective temperature decreases, apparently because food has to be obtained during limited periods and over large areas. There is also more storage of food and fuel and greater use of untended traps and snares. Finally, shelters have to be sturdier, and clothing more cold-resistant. The resulting cognitive demands are met primarily by women because the lack of opportunities for food gathering pushes them into more cognitively demanding tasks, like garment making, needlework, weaving, leatherworking, pottery, and kiln operation. The northern tier of Paleolithic Eurasia thus produced the "Original Industrial Revolution"—an explosion of creativity that preadapted its inhabitants for later developments, i.e., farming, more complex technology and social organization, and an increasingly future-oriented culture. Over time, these humans would spread south, replacing earlier populations that could less easily exploit the possibilities of the new cultural environment. As this environment developed further, it selected for further increases in cognitive ability. Indeed, mean intelligence seems to have risen during recorded history at temperate latitudes in Europe and East Asia. There is thus no unified theory for the evolution of human intelligence. A key stage was adaptation to cold winters during the Paleolithic, but much happened later.

>Education and Intelligence: Pity the Poor Teacher because Student Characteristics are more Significant than Teachers or Schools (2016)

Education has not changed from the beginning of recorded history. The problem is that focus has been on

schools and teachers and not students. Here is a simple thought experiment with two conditions: 1) 50 teachers are

assigned by their teaching quality to randomly composed classes of 20 students, 2) 50 classes of 20 each are composed

by selecting the most able students to fill each class in order and teachers are assigned randomly to classes. In condition

1, teaching ability of each teacher and in condition 2, mean ability level of students in each class is correlated with

average gain over the course of instruction. Educational gain will be best predicted by student abilities (up to r = 0.95)

and much less by teachers’ skill (up to r = 0.32). I argue that seemingly immutable education will not change until we

fully understand students and particularly human intelligence. Over the last 50 years in developed countries, evidence

has accumulated that only about 10% of school achievement can be attributed to schools and teachers while the

remaining 90% is due to characteristics associated with students. Teachers account for from 1% to 7% of total variance

at every level of education. For students, intelligence accounts for much of the 90% of variance associated with

learning gains. This evidence is reviewed.

>There is long-standing tension regarding whether and how to use race or geographic ancestry in biomedical research. We examined multiple self-reported measures of race and ancestry from a cohort of over 100,000 U.S. residents alongside genetic data. We found that these measures are often non-overlapping, and that no single self-reported measure alone provides a better fit to genetic ancestry than a combination including both race and geographic ancestry. We also found that patterns of reporting for race and ancestry appear to be influenced by participation in direct-to-consumer genetic ancestry testing. Our results demonstrate that there is a place for the language of both race and geographic ancestry as we seek to empower individuals to fully describe their family history in research and medicine.

>We show that genetic endowments linked to educational attainment strongly and robustly predict wealth at retirement. The estimated relationship is not fully explained by flexibly controlling for education and labor income. We therefore investigate a host of additional mechanisms that could account for the gene-wealth gradient, including inheritances, mortality, risk preferences, portfolio decisions, beliefs about the probabilities of macroeconomic events, and planning horizons. We provide evidence that genetic endowments related to human capital accumulation are associated with wealth not only through educational attainment and labor income, but also through a facility with complex financial decisionmaking.

>There are growing concerns that social media exacerbates the selective exposure of audience members to content that supports their political views. However, despite the hype, the existing literature does not fully address the extent to which social media users selectively consume like-minded news stories, in part due to different methodologies. In an attempt to move toward a common framework, this study examined the partisan selective exposure of a representative sample of Twitter users by combining survey data with digital trace data. Specifically, the study linked survey responses (n = 558) from Twitter users with their media following and exposure to news via their friends. The study found that selectivity bias was present in all types of data, including self-reported media consumption (survey), media following (Twitter), and indirect exposure to media (Twitter). However, the study found some differences between self-reports and digital measures such that the overlaps in media diets between partisan groups were much larger based on the digital trace data than the self-reported data. In addition, the study observed an asymmetric pattern of selective exposure between conservatives and liberals in the digital trace data, but not in the self-reported data. The implications of these findings are discussed with reference to the contemporary news environment, hostile media effects, and normative assumptions of selective exposure.