from Part V - Cognitive and Motivational Perspectives: Dynamic Processes of Personality
Published online by Cambridge University Press: 18 September 2020
One of the few incontrovertible assumptions concerning human personality is that it is influenced and determined by a wide range of factors. Of major importance are individual differences in genetic factors. This was shown very clearly by Vukasović and Bratko (2015) in their meta-analytic review of twin, family and adoption studies designed to assess the percentage of individual differences attributable to genetic factors for major personality factors or dimensions. With respect to H. J. Eysenck’s three orthogonal dimensions of extraversion, neuroticism and psychoticism (see H. J. Eysenck & M. Eysenck, 1985), the percentage figure ranged between 30 percent for psychoticism and 42 percent for neuroticism (which closely resembles trait anxiety).
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