Todd K. Shackelford Nicholas Pound Editors 2006 Classic and Contemporary Readings In species with internal fertilization, sperm competition occurs when the sperm of two or more males simultaneously occupy the reproductive tract of a female and compete to fertilize an egg (Parker, 1970). A large body of empirical research has demonstrated that, as predicted by sperm competition theory, […]

Edited by Victoria Hendrick 2006 Principles and Treatment Women’s risk for developing a psychiatric disorder is greatest during their reproductive years. Many women, therefore, are likely to require treatment for a psychiatric illness during pregnancy and breastfeeding. Contrary to common stereotype, pregnancy and the postpartum period are not times of relative quiescence of mental illnesses, but rather represent a […]