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“Group polarization” as a book category focuses on how discussion within like-minded groups pushes members toward more extreme positions than they held individually. Titles in this genre explore the psychology and sociology behind the effect—mechanisms like persuasive-arguments theory, social comparison, identity signaling, and echo chambers—and trace its consequences in juries, corporate boards, activist movements, markets, and politics. The category spans classic experiments and contemporary research, narrative case studies, and cross-disciplinary works from social psychology, political science, communication, and organizational behavior. Many books examine risk-taking, extremism, misinformation, and online dynamics, showing how social media architectures amplify polarization. Practical titles also offer strategies to counteract the effect through deliberative design, diversity of viewpoints, facilitation techniques, and institutional safeguards. Ideal for leaders, educators, policymakers, and curious readers, this shelf explains why groups “go to extremes” and what can be done about it.

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