title: Social Evolution: The Force of the Market.
abstract: Biological market forces shape patterns of cooperation typical of small-scale human societies that are organized by division of labor based on age and gender. Labor specialization promotes trade, while supply and demand affect the amount individuals exchange for commodities.
authors.affiliation: Department of Anthropology, University of Utah, 270 S. 1400 E., Salt Lake City, UT 84112, USA. Electronic address: shane.macfarlan@anthro.utah.edu.
authors.forename: Shane J
authors.initials: SJ
authors.lastname: Macfarlan
mesh_terms: D006801:Humans; D007398:Interpersonal Relations