Behavior Genetics

, Volume 26, Issue 4, pp 407–408 | Cite as

Handedness in twins according to zygosity and chorion type: A preliminary report

  • Catherine Derom
  • Evert Thiery
  • Robert Vlietinck
  • Ruth Loos
  • Robert Derom
Article

Abstract

In the course of the East Flanders Prospective Twin Survey (EFPTS), handedness was assessed as part of a genealogical study (Meulemanset al., 1995) in 1616 twins (808 twin pairs) aged 6 to 28. Our findings are that, in this large population-based study with known placentation and zygosity, the often observed higher frequency of left-handedness in twins is confirmed, that it appears to be independent of zygosity and chorion type, and that the belief that discordant handedness in monozygotic twins represents mirrorimaging is mythical.

Key Words

Twins handedness zygosity chorion type heritability 

References

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Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • Catherine Derom
    • 1
  • Evert Thiery
    • 2
  • Robert Vlietinck
    • 1
  • Ruth Loos
    • 1
  • Robert Derom
    • 1
  1. 1.Centre for Human GeneticsKatholieke Universiteit LeuvenBelgium
  2. 2.Department of NeuropsychologyUniversity of GhentGhentBelgium

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