Document Detail

Heritability of personality traits in adult male twins.
MedLine Citation:
PMID:  943159     Owner:  NLM     Status:  MEDLINE    
Personality test data from the California Psychological Inventory were collected on 99 pairs of identical and 99 pairs of fraternal adult male twins. Heritabilities were comuted for all 18 scales and compared to the heritabilities for "pure" scales with overlapping items omitted. Two of the pure scales, Responsibility and Femininity, had zero heritabilities, whereas all of the full scales had moderate to high heritabilities. It was concluded that item overlap has contributed significantly to previous failures to find evidence for the differential heritability of personality traits as measured by the CPI. CPI items were classified into genetic or environmental categories and separate factor analyses of items in these categories revealed more differences than similarities in factor structure. The genetic personality factors included Conversational Poise, Compulsiveness, and Social Ease. Environmental factors included Confidence in Leadership, Impulse Control, Philosophical Attitudes, Intellectual Interest, and Exhibitionism. Compared to the genetic factors, each of the environmental factors accounted for only a very small percentage of the variance.
J M Horn; R Plomin; R Rosenman
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Behavior genetics     Volume:  6     ISSN:  0001-8244     ISO Abbreviation:  Behav. Genet.     Publication Date:  1976 Jan 
Date Detail:
Created Date:  1976-04-19     Completed Date:  1976-04-19     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0251711     Medline TA:  Behav Genet     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  17-30     Citation Subset:  IM    
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MeSH Terms
Compulsive Behavior
Factor Analysis, Statistical
Genetics, Behavioral
Impulsive Behavior
Personality Inventory
Social Adjustment
Social Behavior
Social Environment
Twins, Dizygotic
Twins, Monozygotic
Verbal Behavior

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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