Published : 2026-03-04

Dyadic Coping and Relationship Quality: The Polish Version of the Dyadic Coping Inventory in Actor-Partner Interdependence Model Analyses

Abstract

Dyadic coping (DC) is a key mechanism that supports relationship functioning; however, in Poland, there are no studies using comprehensive tools to assess these processes from a couple-level perspective. The aim of the present study was to examine the associations between DC strategies and romantic relationship quality, as well as to introduce the Polish version of the Dyadic Coping Inventory (DCI). We studied 275 heterosexual couples (N = 550) who completed the Polish DCI and the Partnership Functioning Scale (PFB). We applied the Actor-Partner Interdependence Model (APIM) within a structural equation modelling (SEM) framework, controlling for relationship duration, financial situation, number of children, and relationship status. The models demonstrated excellent fit (RMSEA = 0.043–0.050; CFI = 0.981–0.987; TLI = 0.969–0.978). Actor effects were stronger than partner effects, particularly for positive strategies (supportive and common), which most strongly predicted relationship quality (R² up to 37%). Women more frequently reported stress communication, whereas men reported higher use of delegated and negative DC strategies. Men’s relationship quality was significantly associated with their perception of their partner’s stress communication and delegated support. In contrast, women were more sensitive to their own strategies and their perception of their partner’s engagement in common coping. The Polish adaptation of the DCI is a valuable tool for studying coping mechanisms in couples and may be useful in clinical practice. The findings highlight the crucial role of constructive DC strategies in fostering relationship quality, with an asymmetrical importance of self versus partner behaviours for women and men.

Keywords:

dyadic coping with stress, relationship quality, Actor–Partner Interdependence Model (APIM), dyadic analyses



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