title: Natural selection for the selection task: limits to social exchange theory.
authors.affiliation: Lancashire Polytechnic, Preston, U.K.
authors.forename: P
authors.initials: P
authors.lastname: Pollard
mesh_terms: D005075:Biological Evolution; D003299:Cooperative Behavior; D006801:Humans; D009042:Motivation; D012919:Social Behavior; D012945:Social Values