The WEIRDest People in the World: How the West Became Psychologically Peculiar and Particularly Prosperous

The WEIRDest People in the World explains why Western, Educated, Industrialized, Rich, and Democratic people are psychological outliers. They are unusually individualistic, analytic, patient, guilt-oriented, trusting of strangers, and committed to impersonal rules. Joseph Henrich traces this pattern to a long cultural transformation, especially the Western Church’s attack on cousin marriage, polygyny, clans, and extended kinship. As kin networks weakened, Europeans joined towns, guilds, monasteries, universities, markets, and voluntary associations. Protestant literacy, monogamy, legal abstraction, urban charters, and commercial life further reshaped how people thought and cooperated. The result was not simply “Western superiority,” but a peculiar psychology that helped make modern law, science, democracy, and industrial growth possible.