Perspectives on females, males, and sexuality / Kathryn Kelley -- Hormones and sex-related behavior: a comparative analysis / Bruce Svare and Craig H. Kinsley -- A Biosocial theory of heterosexual relationships / Douglas T. Kenrick and Melanie R. Trost -- The premenstrual syndrome / Beverly Rolker-Dolinsky -- Gender differences in sexual scenarios / John DeLamater -- Females, males, and sexual responses / William Griffitt -- Sexuality: a feminist perspective / Bernice Lott -- Emotional and cognitive barriers to effective contraception: are males and females really different? / Meg Gerrard