This book investigates the extent to which human economic behavior is driven by universal motives versus culturally specific social norms. The authors, a multidisciplinary team of anthropologists and economists, utilize a comparative framework to analyze experimental data from fifteen small-scale societies. By integrating ethnographic field observations with standardized economic games, the text argues that human sociality is significantly shaped by local institutional structures and cultural environments rather than purely self-interested rational choice.

Experts recognize this work as a foundational text for behavioral economics and cross-cultural anthropology. Readers frequently note the academic density of the prose, which serves as a critical reference for scholars examining the intersection of evolutionary biology and social systems.