In the Zimbardo Prison Study, Which of the Following Is

Multiple Choice

In the Zimbardo prison study, which of the following is not true?

A) voluntary participants were randomly assigned as prisoners or guards
B) actual prisoners and guards were used to enhance external validity
C) prisoners were assigned numbers as identification
D) over time the guards became increasingly abusive and punitive towards prisoners
E) the experiment, planned for two weeks, was terminated after six days