Proximity is a crucial factor in obedience. Relating to Milgram's baseline study, the teacher and learner were in seperate rooms (obedience level was 65%)
During the proximity variation, the teacher and learner were in the same room and the obedience level dropped to 40%.
In the touch proximity version it dropped to 30%
in the remote instruction variation obedience dropped to 20.5%
Decreased proximity allows people to psychologically distance themselves from the consequences of their actions.