Abstract

Behavior genetic designs and analyses can be used to address issues of central importance to demography. We use this methodology to document genetic influence on human fertility. Our data come from Danish twin pairs born from 1953 to 1959, measured on age at first attempt to get pregnant (FirstTry) and number of children (NumCh). Behavior genetic models were fitted using structural equation modeling and DF analysis. A consistent medium-level additive genetic influence was found for NumCh, equal across genders; a stronger genetic influence was identified for FirstTry, greater for females than for males. A bivariate analysis indicated significant shared genetic variance between NumCh and FirstTry.

pdf

Additional Information

ISSN
1533-7790
Print ISSN
0070-3370
Pages
pp. 29-42
Launched on MUSE
2001-02-01
Open Access
No
Archive Status
Archived 2010
Back To Top

This website uses cookies to ensure you get the best experience on our website. Without cookies your experience may not be seamless.