Julie and Katie talk with Dr. Nancy Segal, Professor of Psychology at California State University, Fullerton (CSUF) and Director/Founder of the Twin Studies Center, to discuss the results of their DNA test and what these results mean for them genetically and relationally with each other. The twins also talk with Dr. Segal about her twin research and most recent book, Deliberately Divided, which delves into the heartbreaking cases of twins purposely separated at birth and secretly studied by researchers and psychoanalysts.