Proximity - Milgram's study, teacher could hear the learner but not see him. In proximity variation, teacher and learner were in the same room, obedience rate dropped 65% to 40%. In touch proximity variation, teacher had to force the learner's hand onto an electric shock plate if he refused to place it there himself after giving a wrong answer- obedience dropped to 30%. In remote instruction variation, experimenter left the room and gave instructions to 25%Location - Milgram instructed variation in run-down office block rather than a prestigious yale uni. Setting of the baseline study. In this obedience fell to 47.5%. Uni environment gave the study legitimacy and authority. They were more obedient because they perceived that the experimenter shared this legitimacy and that obedience was expected. However quite high in the office block because people perceived the 'scientific nature' of the procedureUniform- experimenter wore lab coat as symbol of his authority. One variation, experimenter called away because of the procedure. Role was taken over by ordinary member of public (confederate). In normal clothes rather than a lab coat. Obedience rate dropped 20% the lowest of these variations. Uniforms encourage obedience- widely recognised symbols of authority, someone without has less right to expect obedience.