Sex differences and nonadditivity in heritability of the multidimensional personality questionnaire scales

Deborah Finkel, Matt McGue

Research output: Contribution to journalArticlepeer-review

110 Scopus citations

Abstract

A sex-limitation model was applied to the Multidimensional Personality Questionnaire (MPQ) data from the Minnesota Twin Family Registry. The sample included 626 monozygotic (MZ) twin pairs, 517 same-sex dizygotic (DZ) twin pairs, and 114 opposite-sex DZ twin pairs ranging in age from 27 to 64 years (mean age = 37.8). In addition, whenever possible, family members of the twins were also assessed: 1,690 spouses, 495 parents, 322 siblings, and 535 offspring. The goals of the present investigation were to analyze the covariance matrices to determine whether (a) there was evidence for sex limitation of heritability of the MPQ scales and (b) there was evidence for nonadditive genetic influences on these scales. Significant sex differences in heritability were found for 3 of the scales: Alienation, Control, and Absorption. In addition, evidence for dominance was found for all scales except Traditionalism and Absorption.

Original languageEnglish (US)
Pages (from-to)929-938
Number of pages10
JournalJournal of personality and social psychology
Volume72
Issue number4
DOIs
StatePublished - Apr 1997

Fingerprint Dive into the research topics of 'Sex differences and nonadditivity in heritability of the multidimensional personality questionnaire scales'. Together they form a unique fingerprint.

Cite this