About: The WEIRDest People in the World

The WEIRDest People in the World: How the West Became Psychologically Peculiar and Particularly Prosperous is a 2020 book by Harvard professor Joseph Henrich that aims to explain history and psychological variation with approaches from cultural evolution and evolutionary psychology. In the book, Henrich explores how institutions and psychology jointly influence each other over time. More specifically, he argues that a series of Catholic Church edicts on marriage that began in the 4th century undermined the foundations of kin-based society and created the more analytical, individualistic thinking prevalent in western societies.