Charlotte J. Patterson, Ph.D., is Professor of Psychology and Director of the Women, Gender & Sexuality program at the University of Virginia. Her recent work has focused on sexual orientation, human development, and family lives, especially on the development of children with lesbian and gay parents. Dr. Patterson is a Fellow of the Association for Psychological Science (APS) as well as of the American Psychological Association (APA), and is a past-President of the Society for Psychological Research on Lesbian, Gay and Bisexual Issues. Anthony R. D'Augelli, Ph.D., is Associate Dean of Undergraduate Programs and Outreach in the College of Health and Human Development and Professor of Human Development at The Pennsylvania State University. His work has focused on the development of sexual orientation, especially during adolescence and late adulthood.