Floyd Allport's groundbreaking book 'Social Psychology' was published. Drawing upon experimental methods and applied research to study group process, rather than sociological perspectives which had previously dominated the subject; this discipline defining book was instrumental in establishing social psychology as a legitimate field of scientific interest.

Notable chapters within the book include: The Physiological Basis of Human Behavior, The Nature and Development of Social Behavior, The Measurement of Personality, Social Stimulation: Facial and Bodily Expression and Social Attitudes and Social Consciousness.

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Social Psychology