Whether the experiment went horribly wrong or horribly right is entirely a matter of opinion, although the “horrible” seems pretty clear cut. The experiment showed how good, perfectly normal people were capable of assuming roles quite contrary to their nature. The guards and prisoners were self-selecting sample groups, offered $15 dollars a day in exchange for their voluntary involvement in the experiment. Their backgrounds were checked to make sure they had no records of mental illness, violence or criminal activity.
These bright, mentally and physically healthy young men were selected at random into 2 groups of nine, one of which were designated as guards, the other as prisoners.
The division was entirely random, the subjects had no way of influencing the selection process and no individual qualities were taken into account.
Although some prisoners later believed that the larger boys had been picked as guards deliberately. In fact a coin had simply been flipped nine times. The experiment got out of control because the subjects entered too deeply into the roles they