Why have the social sciences in general failed to produce results with the ever-increasing explanatory power and predictive strength of the natural sciences? In seeking an answer to this question, Alexander Rosenberg, a philosopher of science, plunges into the controversial discipline of sociobiology. Sociobiology, Rosenberg asserts, deals in those forces governing human behavior that traditional social science has unsuccessfully attempted to slip between: neurophysiology, on the one hand, and selective forces, on the other. Unlike previous works in the two fields it straddles, Rosenberg's...