This piece addresses some of the challenges to social scientific thoug
ht originating from the field of evolutionary psychology and from soci
al scientists committed to making biological arguments an important co
mponent of the sociological discussion of gender I provide my own biol
ogical perspective on these contemporary discussions, noting especiall
y the different kinds of explanatory value one can expect from particu
lar kinds of argument. I also call for the application of stricter sci
entific standards to arguments about the evolution of sex differentiat
ed human behaviors. I introduce some basic generic concepts, such as t
he norm of reaction, which focus attention on the interaction between
genes and environment during intra-generational development. Finally,
I challenge the idea that there is a necessary correlation between hor
mone levels and reproductive behavior in vertebrates.