Millikan (1993) and Wilson (1994) argue, for different reasons, that t
he essential reference to the environment in adaptationist explanation
s of behavior makes (psychological) individualism inconsistent with ev
olutionary psychology. I show that their arguments are based on misint
erpretations of the role of reference to the environment in such expla
nations. By exploring these misinterpretations, I develop an account o
f explanation in evolutionary psychology that is fully consistent with
individualism. This does not, however, constitute a full-fledged defe
nse of individualism, since evolutionary psychology is only one explan
atory paradigm among many in psychology.