“A review of this literature suggests that there are (at least) seven well established types of cooperation: (1) the allocation of resources to kin; (2) coordination to mutual advantage; (3) social exchange; and conflict resolution through contests featuring (4) hawkish displays of dominance and (5) dove-ish displays of submission; (6) division of disputed resources; and (7) recognition of prior possession.

In my research, I have shown how each of these types of cooperation can be used to identify and explain a distinct type of morality.”