| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 951470 | Journal of Research in Personality | 2011 | 4 Pages |
General factors of personality (based on the California Psychological Inventory) and cognitive skill (the National Merit Scholarship Qualifying Test selection score) were correlated .284 in a sample of 490 monozygotic and 317 dizygotic twin pairs. The correlation was partitioned into genetic, and shared and unshared environmental sources: approximately 39%, 50% and 11%, respectively. The results offered some support to a theory that such a correlation may reflect evolutionary trends, although questions remained about the role of nonadditive genetic variance and the nature of the selection involved.
► An r of .284 found between general factors of cognitive skills and personality. ► Using twins, the r was analyzed into genetic and environmental components. ► Result: 39% additive genes, 50% shared environment, 11% unshared. ► Problems in explaining genetic portion by evolutionary selection discussed.
