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Who developed the frustration-aggression hypothesis in 1939?

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The frustration-aggression hypothesis was developed in 1939 by a group of psychologists from Yale University, including John Dollard, Leonard Doob, Neal Miller, O.H. Mowrer, and Robert Sears.1

They introduced the concept in their influential monograph, Frustration and Aggression, which integrated perspectives from psychology, sociology, and anthropology to explain aggressive behaviour as a consequence of blocked goal-directed activity.1