TY - JOUR
T1 - Normal and abnormal personality traits
T2 - Evidence for genetic and environmental relationships in the Minnesota study of twins reared apart
AU - Markon, Kristian E.
AU - Krueger, Robert F.
AU - Bouchard, Thomas J.
AU - Gottesman, Irving I.
PY - 2002/10
Y1 - 2002/10
N2 - Recent studies have demonstrated substantial correlations between normal and abnormal personality traits. Yet little is known about how these correlations are mediated genetically and environmentally: Do normal and abnormal personality traits stem from the same underlying genes and environments? We addressed this question using data from 128 monozygotic and dizygotic twin pairs in the Minnesota Study of Twins Reared Apart (MISTRA). Additive genetic and nonshared environmental correlations between scales of the Minnesota Multiphasic Personality Inventory (MMPI) - an index of abnormal personality - and the Multi-dimensional Personality Questionnaire (MPQ) - an index of normal personality - were estimated. Results indicated that phenotypic correlations between normal and abnormal personality were mediated by genetic as well as environmental factors, although the magnitude of genetic mediation tended to be larger overall. Moreover, the patterns of phenotypic, genetic, and environmental relationships among the scales were similar, suggesting that influences on normal and abnormal personality act through systems common to both. It is suggested that future research focus on the neurogenetic substrates of these shared systems and how dysfunction in these systems influences development of disordered personality.
AB - Recent studies have demonstrated substantial correlations between normal and abnormal personality traits. Yet little is known about how these correlations are mediated genetically and environmentally: Do normal and abnormal personality traits stem from the same underlying genes and environments? We addressed this question using data from 128 monozygotic and dizygotic twin pairs in the Minnesota Study of Twins Reared Apart (MISTRA). Additive genetic and nonshared environmental correlations between scales of the Minnesota Multiphasic Personality Inventory (MMPI) - an index of abnormal personality - and the Multi-dimensional Personality Questionnaire (MPQ) - an index of normal personality - were estimated. Results indicated that phenotypic correlations between normal and abnormal personality were mediated by genetic as well as environmental factors, although the magnitude of genetic mediation tended to be larger overall. Moreover, the patterns of phenotypic, genetic, and environmental relationships among the scales were similar, suggesting that influences on normal and abnormal personality act through systems common to both. It is suggested that future research focus on the neurogenetic substrates of these shared systems and how dysfunction in these systems influences development of disordered personality.
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U2 - 10.1111/1467-6494.05020
DO - 10.1111/1467-6494.05020
M3 - Article
C2 - 12322856
AN - SCOPUS:0036779946
SN - 0022-3506
VL - 70
SP - 661
EP - 694
JO - Journal of personality
JF - Journal of personality
IS - 5
ER -