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Sources of variance in HEXACO personality traits across the lifespan: Evidence from a cross-national twin study (CROSBI ID 679064)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Kandler, Christian ; Lewis, Gary Jay ; Butković, Ana ; Vukasović Hlupić, Tena ; Bratko, Denis Sources of variance in HEXACO personality traits across the lifespan: Evidence from a cross-national twin study // World Conference on Personality - Program & Abstracts. 2019. str. 86-87

Podaci o odgovornosti

Kandler, Christian ; Lewis, Gary Jay ; Butković, Ana ; Vukasović Hlupić, Tena ; Bratko, Denis

engleski

Sources of variance in HEXACO personality traits across the lifespan: Evidence from a cross-national twin study

Behavior genetic studies have shown that about 40% to 50% of individual differences in personality characteristics are attributable to genetic sources including additive and non-additive genetic factors as well as gene × environment interplay, whereas the remaining variance is due to environmental sources with little evidence for significant environmental factors that act to increase the similarity of family members. Recent studies found evidence for systematic declining genetic contributions to individual differences (i.e., heritability) in personality traits across adulthood. In this study on the sources of variation in the six so-called HEXACO personality traits Honesty-Humility, Emotionality, Extraversion, Agreeableness, Conscientiousness, and Openness, we combined three twin data sets from the UK, Croatia, and Germany. This sample spans a range from 14 to 90 years of age and allowed us to examine genetic and environmental components across sexes, origin of twin samples, and ages. The entire sample encompasses 4, 210 individuals including 955 monozygotic (MZ) and 1150 dizygotic (DZ) twin pairs. In all subsamples, the six personality traits were captured with the 60-item HEXACO-Personality Inventory-Revised in the relevant language version (English, Croatian, and German). We ran structural equation model analyses based on the classical twin design and tested for sex, sample, and age differences in the genetic and environmental components. Heritability estimates ranged between h²=.39 (Honesty-Humility) and h²=.65 (Openness) with significant additive and non-additive genetic influences for Emotionality, Agreeableness, and Conscientiousness. Genetic components significantly decline for each trait across adulthood, whereas variance due to individual environmental sources increase in relative terms. There was also evidence for a significant shared environmental component in Openness, which tended to increase with age. The current study provided further evidence for a substantial genetic contribution to variation in personality traits that declines across adulthood.

personality, HEXACO, twin study

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Podaci o prilogu

86-87.

2019.

objavljeno

Podaci o matičnoj publikaciji

World Conference on Personality - Program & Abstracts

Podaci o skupu

3rd World Conference on Personality

predavanje

02.04.2019-06.04.2019

Hanoi, Vijetnam

Povezanost rada

Psihologija