At the end of the experiment, after all the prisoners had been released and the guards let go, everyone was brought back into the same room for evaluation and to be able to get their feelings out in the open towards one another.
Til slut, efter at alle "fangerne" var blevet løsladt og "vagterne" var sendt hjem, blev de alle samlet i det samme lokale for at evaluere, og for at kunne få deres følelser udtrykt overfor hinanden.