http:// nationalpsychologist.com/2014/09/mass-shooters-received-only-limited-treatment/102638.html
"As a forensic psychologist, I have tested/evaluated 30 teenage and young adult murderers, and almost all of them had been in some kind of “treatment,” usually short term and psychoactive drug-oriented, before they killed. In these cases, access to mental health care was available but did nothing to prevent the violence – despite current arguments in Congress re: proposals for gun control vs. mental health access/treatment. "
"Most of the young murderers I have personally examined had also been in “treatment” and were using prescribed stimulant/amphetamine type drugs before and during the killing events. These medications did not prevent but instead contributed to the violence by disinhibiting normal, frontal cortex control mechanisms. "