"A logical treatise that purports to answer the question of whether or not women and men are essentially different... Christen celebrates the resulting differences between the sexes and maintains that these differences become validating for both men and women. Appropriate for community college students and up, as well as informed general readers."-B. Ayers-Nachamkin, Choice "This is surely one of the most important works in women's studies in recent years, because it goes to the heart of the subject: the biological sources of the differences in behavior and the way they have guided the relation between the sexes. Written in a clear, direct style, Sex Differences imparts a dignity to the human condition that, for reasons explained by Christen, have chronically eluded traditional feminist ideology."-Edward O. Wilson, Museum of Zoology, Harvard University