Prejudices grows stronger when a social perceiver encounters information in their social world that is consistent with their pre judiced attitudes. Prejudice is often largely unaffected, however, when a social perceiver encounters information in their social world that is inc onsistent with prejudiced beliefs and attitudes.
New evidence is thus subject to biased processing.
The Social Psychologist's answer leans toward the situational explanation, although it acknowledges that individual differences contribute. When E's don't constantly prod Ss to increase voltage, most Ss stop MUCH earlier. So, ex cuse of aggression being due to E assuming responsibility is common.