The Belmont Report was written by the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research. The Commission, created as a result of the National Research Act of 1974, was charged with identifying the basic ethical principles that should underlie the conduct of biomedical and behavioral research involving human subjects and developing guidelines to assure that such research is conducted in accordance with those principles. Informed by monthly discussions that spanned nearly four years and an intensive four days of deliberation in 1976, the Commission published the Belmont Report, which identifies basic ethical principles and guidelines that address ethical issues arising from the conduct of research with human subjects.
Read on: https://www.hhs.gov/ohrp/regulations-and-policy/belmont-report/index.html
THE NUREMBERG CODE
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The voluntary consent of the human subject is absolutely essential.
This means that the person involved should have legal capacity to give consent; should be
so situated as to be able to exercise free power of choice, without the intervention of any element
of force, fraud, deceit, duress, over-reaching, or other ulterior form of constraint or coercion; and
should have sufficient knowledge and comprehension of the elements of the subject matter
involved, as to enable him to make an understanding and enlightened decision. This latter
element requires that, before the acceptance of an affirmative decision by the experimental
subject, there should be made known to him the nature, duration, and purpose of the experiment;
the method and means by which it is to be conducted; all inconveniences and hazards reasonably
to be expected; and the effects upon his health or person, which may possibly come from his
participation in the experiment.
The duty and responsibility for ascertaining the quality of the consent rests upon each
individual who initiates, directs or engages in the experiment. It is a personal duty and
responsibility which may not be delegated to another with impunity
https://history.nih.gov/research/downloads/nuremberg.pdf