Is There a Genetic Correlation Between General Factors of Intelligence and Personality?

J.C. Loehlin, M. Bartels, D.I. Boomsma, D. Bratko, N.G. Martin, R.C. Nichols, M.J. Wright

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

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.
Original languageEnglish
Pages (from-to)234-242
Number of pages9
JournalTwin Research and Human Genetics
Volume18
Issue number03
DOIs
Publication statusPublished - 2015

Cohort Studies

  • Netherlands Twin Register (NTR)

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