Original study – the silent condition 65% of participants continued to give shocks up to 450 volts

Women as the ’teacher’

The same!!! 65%

Voice feedback The ‘learner’ could be heard yelling in pain and saying he didn’t want to continue and that his heart was bothering him.

Little bit lower 62.5%

Increased proximity Teacher and learner in same room

Lower 40%

Physical force Teacher had to force learner’s hand onto the plate to receive electric shock

Lower 30%

Reduced proximity Experimenter left the room and gave instructions to ‘teacher’ by telephone

Lower 20.5%

Change of venue Experiment moved from prestigious Yale university to rundown office in nearby town

LOWER 47.5%

Support Teacher given support from two other ‘teachers’ (who were actually confederates) who refuse to obey

Lower 10%

Getting someone else to do it! Teacher paired with confederate who threw the switches to give the shock

Higher 92.5%

Limited contract Learner agreed to participate on the condition that ‘you let me out when I say so’

LOWER 40%