In Which Variation on Milgram's Classic Study of Obedience Did

Multiple Choice

In which variation on Milgram's classic study of obedience did they find compliance to 450 volts fell to 0 percent?

A) A second experimenter debates with the first as to whether they should continue.
B) Less prestigious location
C) Experimenter gives orders by phone
D) The teacher has to hold the learner's hand on the shock plate.