Ch. 1. Sexual differentiation of the brain: a historical review -- Ch. 2. Genetic contributions to the sexual differentiation of behavior -- Ch. 3. In vitro study for effects of estrogen on estrogen receptor-transfected neuroblastoma cells -- Ch. 4. Steroid metabolism in the brain: role in sexual differentiation -- Ch. 5. Estrogen in gender-specific neural differentiation -- Ch. 6. Glial cells are involved in organizational and activational effects of sex hormones in the brain -- Ch. 7. Sex steroids and weakly electric fish: a model system for activational mechanisms of hormone action -- Ch. 8. Evolution of brain mechanisms controlling sexual behavior -- Ch. 9. Hormonal and nonhormonal mechanisms of sexual differentiation of the zebra finch brain: embracing the null hypothesis -- Ch. 10. Sexual differentiation of a neuromuscular system -- Ch. 11. Development of sexually dimorphic forebrain pathways -- Ch. 12. Sexual differentiation of neuronal circuitry in the hypothalamus -- Ch. 13. Structural sex differences in the mammalian brain: reconsidering the male/female dichotomy -- Ch. 14. Gonadal hormones and sexual differntiation of human behavior: effects of psychosexual and cognitive development -- Ch. 15. Sexual differentiation of spatial functions in humans -- Ch. 16. The luteinizing hormone-releasing hormone system in the developing monkey brain