Twofold

The Singular World of Twins and Twin Studies.
Dr. Nancy L. Segal is a Professor of Psychology and Director of the Twin Studies Center, at California State University, Fullerton. See full bio

Comments on "Why Some Identical Female Twins Are Different"

Why Some Identical Female Twins Are Different

Behavioral and physical differences between identical twins are fascinating because they are unexpected. Many people assume that when identical twins differ they do so because they are treated differently by others, or because they try to differentiate from one another in order to carve out a separate identity. Read More

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