This article proposes that a game theoretic interpretation can be made
of Marcel Mauss' The Gift. The results provide support for the claim
that the institution of reciprocity is a socially stabilizing exchange
mechanism. Suppose that the first interactions among different prehis
toric tribes or bands were characterized, in the words of Hobbes, as b
eing ''short, nasty, and brutish.'' In the absence of voluntary exchan
ge institutions, such as reciprocity, through which these groups could
interact in more cooperative ways, their initial external interaction
s may have been characterized by plunder, pillage and war. It is from
these conflictive relations that more cooperative institutions may hav
e been chosen or have evolved. This paper shows how the gift, and reci
procity in general, could have allowed for the evolution of more coope
rative relations through credible threats of returning to conflict if
the gift was not returned. It is argued that the original motivation f
or the return of the gift may have:been to elicit cooperation. Only af
ter this cooperation had been attained could the gift then evolve into
the social norm that Mauss had observed. It further suggests that rec
iprocity may have an origin of conflict.