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Related Experiment Videos

Hand preference, sexual preference, and transsexualism.

R Green1, R Young

  • 1Department of Psychiatry, Imperial College School of Medicine at Charing Cross, Gender Identity Clinic, Charing Cross Hospital, London, United Kingdom. Richard.green@ic.ac.uk

Archives of Sexual Behavior
|December 1, 2001
PubMed
Summary

Transgender individuals show atypical handedness patterns, with both male-to-female and female-to-male transsexuals exhibiting non-right-handedness more frequently than controls. This suggests altered brain organization in transgender populations.

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Psychology

Background:

  • Atypical handedness is observed in homosexual and transsexual populations.
  • Prenatal androgen exposure is hypothesized to influence handedness and psychosexual development.
  • Further research with larger transsexual samples is needed.

Purpose of the Study:

  • To investigate handedness patterns in a large sample of male-to-female and female-to-male transsexuals.
  • To compare non-right-handedness prevalence in transsexuals versus controls.
  • To explore the potential link between prenatal androgens, cerebral organization, and gender identity.

Main Methods:

  • Studied 443 male-to-female transsexuals and 93 female-to-male transsexuals.
  • Assessed hand preference for six common one-handed tasks.

Related Experiment Videos

  • Compared handedness data with control groups.

    • Main Results:

    • Both male-to-female and female-to-male transsexuals were more frequently non-right-handed than control groups.
    • The findings indicate a higher prevalence of atypical handedness in transsexual individuals.
    • Results support the hypothesis of altered cerebral hemispheric organization.

    Conclusions:

    • Transsexual individuals exhibit a higher prevalence of non-right-handedness compared to the general population.
    • These findings suggest differences in cerebral organization patterns in transsexuals.
    • The study supports the role of early neurodevelopmental factors in gender identity and brain lateralization.