About Dr. Nancy L. Segal

Dr. Nancy L. Segal received a B.A. degree in psychology (with distinction) and English literature from Boston University (1973), and M.A. (1974) and Ph.D. (1982) degrees in Social Sciences and Behavioral Sciences from the University of Chicago. She is currently Professor of Psychology at California State University, Fullerton (CSUF) and Director of the Twin Studies Center which she founded in 1991.

Dr. Segal is the CSUF 2004-2005 Distinguished Professor in Humanities and Social Sciences and the 2004-5 Outstanding Professor of the Year. She also received the 2005 James Shields Award for Lifetime Contributions to Twin Research, from the Behavior Genetics Association and International Society for Twin Studies and the 2006 “International Making a Difference” Award from Multiple Births Canada. Most recently, she was the 2016 recipient of California State University’s campus-wide Wang Family Excellence Award.

Dr. Segal has written several new books about twins. The first is Twin Mythconceptions: False Beliefs, Fables, and Facts About Twins (San Diego: Elsevier, April 2017) and the second is Accidental Brothers: The Story of Twins Exchanged at Birth and the Power of Nature and Nurture (NY: St. Martin’s Press, to be released in April 2018). She is also is the author of the award-winning Born Together-Reared Apart: The Landmark Minnesota Twin Study (Cambridge: Harvard University Press, 2012), as well as Someone Else’s Twin: The True Story of Babies Switched at Birth (Amherst, NY: Prometheus Books, 2011), Indivisible by Two: Lives of Extraordinary Twins (Cambridge: Harvard University Press, 2005) and Entwined Lives: Twins and What They Tell Us About Human Behavior (NY: Dutton, 1999, NY: Plume 2000), and is the senior editor of Uniting Psychology and Biology: Integrative Perspectives on Human Development (Washington, D.C.: APA Press, 1997).

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