Structural equation model: Actor partner interdependence model with actor and partner gg genotypes predicting marital satisfaction.

STD Standardized estimates. a = actor effect, b = partner effect. Letters indicate constrained paths. Also, in the model were associations between husbands’ and wives’ marital satisfaction (B = 104.75; p < .001) and husbands’ and wives’ GG genotype (B = 0.03, p = .13). Model accounts for 4% of the variance in husbands’ and wives’ marital satisfaction.