Bickman (1974) investigated the power of uniform in a field experiment conducted in New York. He found that guards were obeyed on 76% of occasions, whereas a milkman and normal pedestrians were obeyed less (47% and 30% respectfully).
Milgram's experiment found 65% of participants obeyed to the experimenter wearing the scientificlab coat.
People in authority wearing uniform are more likely to gain respect and obedience from others.
