Conversation so far:
What was the Stanford Experiment?
The Stanford Prison Experiment (SPE) was a social psychology experiment that attempted to investigate the psychological effects of perceived power, focusing on the struggle between prisoners and prison officers.
What did the Stanford Experiment show?
Zimbardo's Stanford prison experiment revealed how social roles can influence our behavior. ... The Stanford Prison Experiment was a landmark psychological study of the human response to captivity, in particular, to the real world circumstances of prison life.
Tell me about the author of the Stanford Experiment.
It was conducted at Stanford University on the days of August 14–20, 1971, by a research group led by psychology professor Philip Zimbardo using college students. In the study, volunteers were randomly assigned to be either guards or prisoners in a mock prison, with Zimbardo himself serving as the superintendent.

Question: Was it ethical
Self-contained rewrite: Was the Stanford Experiment ethical?