Longitudinal dyadic analyses of emotion dysregulation and mother–child relationship quality in Chinese children with teacher‐reported oppositional defiant disorder

This study examined whether and how mothers' and children's perceptions of mother–child relationship quality mediated associations between mothers' and children's initial emotion dysregulation and children's emotion dysregulation and oppositional defiant disorder (ODD) symptoms 2 years later. The participants were 155 Chinese children with teacher‐reported ODD and their mothers derived from a three‐wave (2 years apart) longitudinal study. A multiple‐informant approach and a dyadic analysis approach (i.e., actor–partner interdependent modeling) were used. The results revealed that (a) mothers' and children's emotion dysregulation was significantly related to their own and their partners’ concurrent perceptions of relationship quality; (b) mothers' and children's perceptions of relationship quality from Wave 1 to Wave 2 were stable but were also interdependent, such that one's own perception of relationship quality at Wave 1 related to the partner's perception at Wave 2; and (c) relationship quality at the two waves interdependently mediated the associations between mothers' and children's emotion dysregulation at Wave 1 and children's emotion dysregulation and ODD symptoms at Wave 3. Implications for family intervention programs targeting maternal and child emotion dysregulation and strengthening mother–child relationship quality for children with ODD were discussed.