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Twins Reared Apart and Twins in Families: The Findings Behind the Fascination

  • Nancy L. Segal (a1), Yesika S. Montoya (a2) and Erika N. Becker (a1)

Abstract

Dr. Irving I. Gottesman was very creative in applying twin research designs to test hypotheses and predictions about human behavior. Two designs stand out among others: twins reared apart from birth and the twin-family study. I (NS) was inspired to incorporate both of these approaches into my own research programs at California State University, Fullerton. Gottesman's involvement and contributions to reared-apart twin research are described, followed by selected findings from the Minnesota Study of Twins Reared Apart (MISTRA), the Fullerton Study of Chinese Twins Reared Apart (CTA), a case report on separated monozygotic (MZ) female twins from South Korea, and doubly exchanged MZ male twin pairs from Colombia, South America. Recent findings from an ongoing twin-family study of social closeness, and future directions, are also presented.

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Copyright

Corresponding author

address for correspondence: Nancy L. Segal, Psychology Department, California State University, Fullerton, CA 92834, USA. E-mail: nsegal@fullerton.edu

References

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