Karla went to the market to purchase food for a special dinner. the clerk gave her change for a twenty dollar bill instead of a ten dollar bill. karla decided to return the extra change; a freudian would say the was functioning.

Which of the following studies is linked most directly to the establishment of the national research act in 1974 and ultimately to the belmont report and federal regulations for human subject protection? a. the public health service tuskegee study of untreated syphilis in the negro male.b. stanford prison experiment (zimbardo).c. tearoom trade study (humphreys).d. the harvard t3 study.