Passions Within Reason by Robert Frank

The Strategic Role of the Emotions

Argues that so-called irrational emotions play a strategic, evolutionarily shaped role in promoting credible commitment and cooperation where cold rationality fails. Using game theory and vivid examples, it shows how feelings like anger, guilt, love, and sympathy sustain trust, enforce norms, and deter exploitation in bargaining, markets, and personal life. By reframing rationality to include affect as a commitment device, it suggests policy and everyday implications for fostering pro-social behavior and resolving social dilemmas.

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