The best fitting bivariate model of AUD and DIV also indicated that paths should be allowed to vary across sexes. Genetic factors accounted for 52% of the AUD-DIV covariance in males and 54% in females. This suggests that there is a set of genetic factors that contribute to both AUD and divorce, and these genetic factors account for half of the observed association between AUD and divorce. Nonshared environmental influences accounted 45% of the AUD-DIV covariance in males and 41% in females, which indicates that there are events and experiences that twins and siblings don’t share that account for just under half of the observed association between AUD and divorce. Shared environmental influences accounted for a modest proportion of the AUD-DIV covariance in males (3%) and females (5%). The latent genetic correlation between AUD and divorce for males (rA = +0.76) and females (rA = +0.52) suggests that there is substantial—but incomplete—overlap between the genes that predispose individuals to AUD and divorce. The genetic correlation between AUD and divorce is consistent with previous work showing that heritable personality factors related
