title: The evolution of norms.
authors.affiliation: Department of Biological Sciences, Stanford University, Stanford, California, USA.
authors.forename: Paul R
authors.initials: PR
authors.lastname: Ehrlich
authors.forename: Simon A
authors.initials: SA
authors.lastname: Levin
mesh_terms: D000818:Animals; D003657:Decision Making; D019143:Evolution, Molecular; D015186:Hominidae / Q000235:genetics*; D006801:Humans; D008957:Models, Genetic; D012919:Social Behavior