<human>:  Where did the Stanford prison experiment take place?
<bot>: The Stanford prison experiment took place in 1971 at Stanford University. The experiment was conducted by Philip Zimbardo, a professor of psychology at Stanford University. The experiment was designed to study the effects of power and authority on human behavior. The experiment was conducted in a mock prison, and the participants were randomly assigned to be either guards or prisoners. The guards were given the authority to punish the prisoners, and the prisoners were given the authority to punish the guards.