Some of you asked for some references on the issues we discussed at the end of class today. Here they are, in alphabetical order:

• E. Anderson’s contribution to a symposium on Amartya Sen’s philosophy.
• C. Bicchieri, ‘Norms of cooperation’.
• M. Gilbert, ‘Rationality in Collective Action’.
• S. Nichols, ‘On The Genealogy Of Norms: A Case For The Role Of Emotion In Cultural Evolution’.
• A. Rosenberg, ‘Darwinism in moral philosophy and social theory’.

Also worth checking out, although I can’t give you an electronic version of them, are:

• R. Frank, ‘Cooperation through emotional commitment’, in R. Nesse, et al., The Evolution of Commitment, pp. 57–76.
• Skyrms, The Evolution of the Social Contract.