We reanalyze previously published data on 309 MZ and 333 DZ twin pairs aged 25 to 74 years from the MIDUS survey, a nationally representative archived sample, to examine how much of the genetic covariance between a general factor of personality (GFP), a lower-order life history factor, and a general physical and mental health factor, is of the nonadditive variety. We found nonadditive genetic effects (D) could not be ruled out as a contributor to the shared variance of these three latent factors to a Super- K Life History factor. We suggest these genetic correlations support the view that a slow ( K-selected) life history strategy, good health, and the GFP coevolved and are mutually coadapted through directional selection.
- Big One
- General factor of personality
- Nonadditive genetic variance
ASJC Scopus subject areas
- Obstetrics and Gynecology
- Pediatrics, Perinatology, and Child Health