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Is there a genetic correlation between general factors of intelligence and personality? / John C. Loehlin, Meike Bartels, Dorret I. Boomsma, Denis Bratko, Nicholas G. Martin, Robert C. Nichols, Margaret J. Wright.

By: Loehlin, John C.
Contributor(s): Bratko, Denis [aut] | Bartels, Meike [aut] | Boomsma, Dorret I [aut] | Martin,, Nicholas G [aut] | Nichols, Robert C [aut] | Wright, Margaret J [aut].
Material type: materialTypeLabelArticleDescription: 234-242.Subject(s): general factor of intelligence, general factor of personality, heritability, mutation-selection balance, life history theory, twins In: Twin Research and Human Genetics 18 (2015), 3 ; str. 234-242Abstract: We tested a hypothesis that there is no genetic correlation between general factors of intelligence and personality, despite both having been selected for in human evolution. This was done using twin samples from Australia, the United States, the Netherlands, Great Britain, and Croatia, comprising altogether 1,748 monozygotic and 1,329 same-sex dizygotic twin pairs. Although parameters in the model-fitting differed among the twin samples, the genetic correlation between the two general factors could be set to zero, with a better fit if the U.S. sample was excepted.
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We tested a hypothesis that there is no genetic correlation between general factors of intelligence and
personality, despite both having been selected for in human evolution. This was done using twin samples
from Australia, the United States, the Netherlands, Great Britain, and Croatia, comprising altogether 1,748
monozygotic and 1,329 same-sex dizygotic twin pairs. Although parameters in the model-fitting differed
among the twin samples, the genetic correlation between the two general factors could be set to zero,
with a better fit if the U.S. sample was excepted.

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