Behavior Genetics

, Volume 10, Issue 1, pp 59-71

First online:

Spouse similarity in American and Swedish couples

  • Richard A. PriceAffiliated withDepartment of Genetics, Stanford University
  • , Steven G. VandenbergAffiliated withInstitute for Behavioral Genetics, University of Colorado

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


A very similar pattern of homogamy was found in samples of American and Swedish couples for physical, social, and behavioral variables. In the Swedish sample, there were only minor differences in assortment, i.e., in similarity to spouses, between MZ and DZ twins. Although our data are not conclusive on this point, there was an indication that the observed similarity of spouses for most variables is due to initial assortment rather than to convergence of phenotypes after initial contact. Exceptions are that spouses do appear to converge for highly plastic variables such as alcohol consumption and amount of social activity.

Key Words

assortative marriage assortative mating homogamy phenotypic convergence twins socioeconomic status