Behavior Genetics

, Volume 10, Issue 2, pp 153–162 | Cite as

Assessment of heritability for personality, based on a short-form of the Eysenck personality inventory: A study of 12,898 twin pairs

  • Birgitta Floderus-Myrhed
  • Nancy Pedersen
  • Ingrid Rasmuson
Article

Abstract

The influence of genetic factors for two personality dimensions was analyzed using data from 12,898 unselected twin pairs of the Swedish Twin Registry. The heritability index was 0.50 (men) and 0.58 (women) for psychosocial instability. Corresponding figures for psychosocial extraversion were 0.54 and 0.66. Thus, about half the phenotypic variation may be attributed to genetic factors.

Key Words

twin studies heritability extraversion neuroticism 

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Copyright information

© Plenum Publishing Corporation 1980

Authors and Affiliations

  • Birgitta Floderus-Myrhed
    • 1
    • 2
  • Nancy Pedersen
    • 3
  • Ingrid Rasmuson
    • 1
    • 2
  1. 1.The Department of Environmental Hygiene of the Karolinska InstituteStockholmSweden
  2. 2.The Department of Environmental Hygiene of the National Swedish Environment Protection BoardStockholmSweden
  3. 3.Institute for Behavioral GeneticsUniversity of ColoradoBoulder

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