When an individual carries out the orders of an authority figure and acts as their 'agent', with little personal responsibility and reduced moral strain for their actions
In a variation of Milgram's experiment with an additional confederate administering the electric shocks, the percentage of participants who administered the full 450 volts rose dramatically, from 65% to 92.5%
In Milgram's experiment, proximity worked on numerous levels: how close the teacher was to the learner, and how close the teacher was to the experimenter
When the experimenter was replaced by another 'participant' in ordinary clothes, the percentage of participants administering the full 450 volts dropped to 20%
Milgram's research acknowledges the role of environmental forces in the form of situational factors which determine human behaviour such as obedience to unjust orders