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trephination was practice used on patient who had or showed signs of abnormal behavior. They would drill holes in patients skulls to release the demons.(Since 6500 B.C)

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In macon Alabama over 600 black sharecroppers were studied by the US public health to document diseases found in blacks. They were told they have spyphilis and were not told how to treat it.

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homosexuals,jews and negroes were starved, had unecissary surgeriesw/o anesthician , submission to physical emotional and phsychological harm. Was nothingless than premeditated murder masking his research.

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Milgram experiments obedience to authority

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Milgram experiments obedience to authority

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experiments designed to assess particapants' willingness to obey an authority figure and cause harm to others, though doing so conflicted with their personal beliefs

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Palace of justice Neremberg,Germany (1945-46)

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Palace of justice Neremberg,Germany (1945-46)

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This also lead to the Nuremburg where the nazi concentration camp leaders were brought to justice. The Nuremburg code soon followed.

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Ethical Principles of psychologist and code of conduct(1953)

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Ethical Principles of psychologist and code of conduct(1953)

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A final daraft of the apa codes and principles was published in 1953 with revision in 2002. Code 8 in the book covers what was discused in the timeline.