Darwinian Reductivism on Women, Men & Sex

I wonder what your responses are to this current example of an analysis of social phenomena cast in terms of a reductivist form of Darwinian, adapted from Why Beautiful People Have More Daughters, by Alan S. Miller and Satoshi Kanazawa, to be published by Perigee in September 2007. Degeneracy or Progressivism?

Human behavior is a product both of our innate human nature and of our individual experience and environment. In this article, however, we emphasize biological influences on human behavior, because most social scientists explain human behavior as if evolution stops at the neck and as if our behavior is a product almost entirely of environment and socialization. In contrast, evolutionary psychologists see human nature as a collection of psychological adaptations that often operate beneath conscious thinking to solve problems of survival and reproduction by predisposing us to think or feel in certain ways. ....
The implications of some of the ideas in this article may seem immoral, contrary to our ideals, or offensive. We state them because they are true, supported by documented scientific evidence. Like it or not, human nature is simply not politically correct