You sign-up for a learning experiment. The learner subject is led to another room. You get to see the learner being hooked up to an electro-shock machine. You are given a mild shock as a demonstration. Before you leave the shock room you overhear the learner say that he has a history of heart problems. You are told by the experimenter, a man in a lab coat, that you will give the subject shocks when the learner gives incorrect answers (the more answers missed, the more severe the shocks get). You sit down in front of a machine with 30 switches.As the level of shock goes up the learner begins to protest, asks to leave the study, and screams in pain and agony. At some point you probably suggest ending the experiment. The experimenter responds by saying, "Please continue," "You must go on," "It is absolutely essential that you continue," or "You have no other choice, you must go on." Everyone went until at least 3—volts before they stopped. Subjects were severely distressed by the experience often laughing nervously and arguing with the experimenter, but many still continued on.