Behavioral and Brain Sciences

Short Communication

Evolution, the emotions, and rationality in social interaction

David J. Butler a1

a1 Department of Economics, University of Arizona, Tucson, AZ, 85721 and Department of Economics, University of Western Australia, Nedlands, WA 6009, Australia


Although Colman's criticisms of orthodox game theory are convincing, his assessment of progress toward construction of an alternative is unnecessarily restrictive and pessimistic. He omits an important multidisciplinary literature grounded in human evolutionary biology, in particular the existence and function of social emotions experienced when facing some strategic choices. I end with an alternative suggestion for modifying orthodox game theory.