An explanation for obedience which suggests that we are morelikely to obey people who we perceive to have authority over us. This authority is justified (legitimate) by the individual's position of power within a social hierarchy
The "I was simply following orders" argument cannot always be used to explain the behaviour of the Nazis, as some acted autonomously without direct orders
Kilham and Mann (1974) found only 16% of Australian participants went to 450 volts, while Mantell (1971) found 85% of German participants did, showing cultural differences in obedience to authority