![]() It gives us another piece of evidence in the whole nature-versus-nurture puzzle.” Segal, who has also studied hundreds of pairs of fraternal and identical twins, including dozens reared apart. “I expected the virtual twins to be more alike than they were because they had been raised together all their lives,” said Dr. Her research has appeared in publications like the Journal of Educational Psychology over the last few years. She said her work has shown that virtual twins have less in common in terms of behavior, intelligence and decision-making than fraternal or identical twins, including those reared apart, or even biological siblings several years apart in age. Segal runs the Twin Studies Center at California State University, Fullerton, and is the author of two books on twins. Raised together essentially from birth, or at least since infancy, virtual twins may be genetic strangers, but they share an environment from an early point in life.Ī twin herself, Dr. Segal’s studies, as in so many involving biological twins, it seems that nature is winning. Segal has been studying 137 such sets of siblings, whose average age difference is three months.Īs scientific subjects, virtual twins provide a rich pool of material for researchers tackling the nature-versus-nurture question. ![]() By her definition, virtual twins are unrelated children born within nine months of each other who enter a family, through birth or adoption, in the first year of life. Segal, a psychologist who is researching behavioral differences among twins, refers to as virtual twins. The Curry sisters, college sophomores who live with their parents in this high desert town on the outskirts of San Diego, are what Dr. Your mom was in labor for four months? asked one friend, said Sara, 19. ![]() AS sisters only four months apart, Julie and Sara Curry grew up being peppered with questions from confused classmates. ![]()
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