Why did Zimbardo need to end the Stanford Prison Experiment early?

The students refused to cooperate.

The students used their power to harm others.

The students did not take the experiment seriously.

The students protested against unfair treatment of the prisoners.

1 answer

The Stanford Prison Experiment was ended early primarily because the students used their power to harm others. As the experiment progressed, the participants assigned to the role of guards began to display abusive behaviors towards those in the role of prisoners, leading to extreme psychological distress among the participants. This concerning shift in behavior and the overall ethical implications of the experiment led Philip Zimbardo to terminate it after only six days, despite being originally planned for two weeks.