Actor–Partner Interdependence Model (APIM).

<p>The boxes on the left indicate the independent variables for men and women, the boxes on the right indicate the dependent variable for each. E1 and E2 represent the residual error of sexual satisfaction for men and women, respectively. Single-headed arrows indicate predictive paths. Double-headed arrows indicate correlated variables. Paths labeled with ‘a’ indicate actor effects, and paths labeled with ‘b’ indicate partner effects.