Gordon Allport's classic book 'The Nature of Prejudice' was published. Based on years of exhaustive research this landmark text documented groundbreaking insights into the origins and nature of discrimination. Among the many topics addressed by Allport were: Formation of in-groups, the scientific study of group differences, cognition in the prejudiced personality, scapegoating and stereotypes.

The Nature of Prejudice remains one of the most influential and critically acclaimed publications on intergroup relations ever written; as evidenced by the words of eminent psychologist Elliot Aronson who stated that Allport "carefully chose among existing theories and data to come up with a brilliant and accurate statement of the eclectic causes and possible cures of prejudice."