title: Reply to Egloff et al.: On the relationship between positive and negative reciprocity.
authors.forename: Toshio
authors.initials: T
authors.lastname: Yamagishi
mesh_terms: D003299:Cooperative Behavior; D005260:Female; D005716:Game Theory; D006801:Humans; D008297:Male; D008960:Models, Psychological
references.citation: Proc Natl Acad Sci U S A. 2012 Dec 11;109(50):20364-8
references.pmid: 23188801
references.citation: Proc Natl Acad Sci U S A. 2013 Feb 26;110(9):E786
references.pmid: 23382252