Individual distress and dyadic adjustment over the course of couple therapy and three-year follow-up: A replication study.

This replication study examined the change over time and the relationship between depressive symptoms and dyadic adjustment during residential couple therapy and at one- and three-year follow-up. Mixed models were used in the analyses, and a disaggregation procedure was applied to examine the results on a between-person as well as on a within-person level. Overall, the results of the previous study were replicated. Significant improvement ( < .001) occurred on measures assessing relationship satisfaction and depressive symptoms from admission to discharge (effect sizes .47 to.72) and from admission to three-year follow-up (effect sizes .59 to .66). The within-person finding implies that when a person experiences more depressive symptoms than usual for him/her, subsequent dyadic adjustment is poorer than usual. Thus, our previous clinical implication suggestion is reinforced in this study: When treating couples suffering from co-existing relational and symptomatic distress, couple therapy should include the aim of lowering individual depressive symptoms.