Figure 1.

Conceptual depiction of the longitudinal Actor-Partner Interdependence Models used to test the indirect effects. Dyad members were treated as indistinguishable. Each model tested the indirect actor and partner effects of one stressor on one health outcome through relationship quality and negative relationship interactions. Of note, each model controlled for relationship length, the actor and partner levels of relationship quality and negative relationship interactions at the previous time point (time t-1), and the actor level of the health outcome at the previous time point (time t-1). t and t-1 refer to the time point at which the variables were measured, with t-1 referring to the time point before time t.