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Finnish Twins Reared Apart III: Personality Factors

Published online by Cambridge University Press:  01 August 2014

H. Langinvainio ,
J. Kaprio ,
M. Koskenvuo  and
J. Lönnqvist
H. Langinvainio*
Affiliation:
Department of Public Health Science, University of Helsinki
J. Kaprio
Affiliation:
Department of Public Health Science, University of Helsinki
M. Koskenvuo
Affiliation:
Department of Public Health Science, University of Helsinki
J. Lönnqvist
Affiliation:
Department of Psychiatry, University of Helsinki
*
Department of Public Health Science, University of Helsinki, Haartmaninkatu 3, 00290 Helsinki 29, Finland

Abstract

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This study is based on data from 165 adult twin pairs separated at 10 years or less. Information on personality factors: extraversion (E) and neuroticism (N) (EPI scale short from), life satisfaction (LS) (Allardt) and stress of daily activities (SDA) was obtained as part of the questionnaire study carried out in the entire Finnish Twin Cohort in 1975. Later in 1979 a questionnaire sent to the twins reared apart yielded a scale (range 7-30 points) measuring the environmental dissimilarities after separation (reliability 0.83). The effect of separation on personality factors by analysis of variance of individual data was studied. Sex, zygosity and age-at-separation were included in the models. The overall expalanatory rates were low (2.1-4.4%). The definitive study group was formed by selecting those pairs with a dissimilarity score greater than 15. The following intraclass correlations were obtained:

Keywords

Twins reared apartRearing environmentAdoptionBehavioral geneticsPersonality
Type
Twins Reared Apart
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 33 , Issue 2 , April 1984 , pp. 259 - 264
Copyright
Copyright © The International Society for Twin Studies 1984

References

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