Nancy L. Segal PhD

Dr. Nancy L. Segal received a B.A. degree from Boston University (1973) and an M.A. degree (1974) and Ph.D. degree (1982) from the University of Chicago. She is currently Professor of Developmental Psychology and Director of the Twin Studies Center, at California State University, Fullerton. She was recognized as CSU Fullertonπs 2004-5 Outstanding Professor of the Year, as well as the 2004-5 Distinguished Professor in Humanities and Social Sciences. Dr. Segal also received the 2005 James Shields Award for Lifetime Contributions to Twin Research from the Behavior Genetics Association and International Society for Twin Studies.

Dr. Segal is the author of Indivisible by Two: Lives of Extraordinary Twins (Cambridge, NA: Harvard University Press). This collection of essays on twelve twin, triplet and quadruplet sets brings together humanity and science in a unique way. She is also the author of Entwined Lives: Twins and What They Tell Us About Human Behavior (NY: Dutton, 1999).

This comprehensive survey of twins and twin research includes chapters on the biology of twinning, twin research methodology, findings on intelligence, personality, mental disorders and athletic prowess, studies of twin relationships, information on twins raised apart, findings on "pseudo-twins" or same-age unrelated children raised together, non-human twinning, new fertility treatments, life histories of noteworthy twins, legal issues involving twins, conjoined twins and a timely survey of nature-nurture issues.