Includes bibliographical references and index.

A moving target: Are humans naturally either male or female? Is gender identity innate? Is gender variation a psychological illness? -- The question of difference: Evolution theory and psychological sex differences; Sex differences in the brain and male and female differing cognitive abilities; Do women and men communicate differently? Should we continue to study sex differences? -- Culture says: "Gender matters": Should Title VII apply to sexual harassment between individuals of the same sex? Is female circumcision universally wrong? Can women's sexuality be free from traditional gender constraints? -- Sex, gender, and youth: Is fetal sex selection harmful to society? Is gender the most critical factor in the recent spate of school shootings? -- All in the family: Is domestic violence best treated as a gender crime? Should men and women have equal parental rights? Can fathers 'mother'? Are welfare reforms ineffective because welfare mothers are irresponsible and lazy? -- Transcending gender: Can we raise 'gender-neutral' children? Does transsexualism solve the problem of fixed definitions of gender identity? Will the experimentation with different identities in cyberspace help us to transcend gender?