The volunteer and confederate meet and their roles are decided. They were told of their right to withdraw and that the study was on memory and learning. They were told about the procedure and that the experimenter is responsible and the shocks do not cause permanent damage.
The confederate is taken to a separate room to the participant and experimenter, he cant be seen but can be heard. The participant is told to question the learner using the given paired-association. If they get it wrong they are told to shock the learner, this increases by 15V each time.
The experiment caused a lot of stress and anxiety. The participant was debriefed on the true nature of the experiment. They met the confederate and attempt was made to relieve psychological harm. The surprising results were published showing that 67% obeyed.