Titans Give 2026

Dr. Nancy L. Segal is Psychology Professor and Director of the Twin Studies Center, California State University, Fullerton. She received a B.A. from Boston University and M.A./Ph.D. degrees from the University of Chicago. She has authored over 300 articles and nine books. Born Together-Reared Apart: The Landmark Minnesota Twin Study (2012), won the APA’s William James Book Award. Deliberately Divided: Inside the Controversial Study of Twins and Triplets Adopted Apart (2021), became a BBC film. Dr Segal’s work has been featured in the New York Times and Atlantic Monthly. She has appeared on the Oprah Winfrey Show, Good Morning America, and NPR.

Dr. Nancy Segal in Her Own Words: 

The Twin Studies Center at CSU Fullerton has been in existence for over 30 years. It houses extensive collections of books, journals, films, articles, and artifacts. As the founder and director, I am fully committed to expanding its activities and functions, heightening its already high visibility at local, national, and international levels—and, above all, making it into a permanent entity within the Dept of Psychology.

Currently the TSC has 2 main functions—supporting faculty and student research—and distributing information about twins and twin research to those who request it—twins, families, scientists, counselors, educators, and physicians. Each week, on my own, I field between 25-50 inquiries. It is important for me to make sure that the TSC continues.