Interparental Relational Mismatch: Implications for Children’s Non-Cognitive Development

Sharon Picco , University of Florence, University of Turin, Collegio Carlo Alberto
Chiara Pronzato, Unito
Annalaura Nocentini, University of Florence

Family structures and relationships are central to children’s development, with parental relational happiness playing an important role, yet little is known about the effects of unequal relationship satisfaction in seemingly typical two-parent families. This study introduces the concept of Interparental Relational Mismatch, a discrepancy in reported relationship happiness between parents, and examines its impact on children’s non-cognitive skills from early childhood to adolescence. Using seven waves of the Millennium Cohort Study (ages 9 months to 17 years), children’s emotional symptoms, conduct problems, hyperactivity, peer relationship problems, and prosocial behavior were assessed via the Strengths and Difficulties Questionnaire. Interparental mismatch was categorized by its presence or absence and by the parent reporting lower happiness, with additional categories for single-parent families and those with a changed partner. Associations were estimated using lagged panel regression models, with fixed-effects models assessing potential causal effects. Results indicate that mismatch, particularly with lower maternal happiness, is linked to higher behavioral difficulties and lower prosociality, with the strongest effects in early childhood and variable patterns across adolescence. Paternal mismatch shows smaller effects, suggesting a protective role of maternal well-being. Absence of mismatch but with medium-low couple happiness is associated with poorer outcomes across all skills. Families with a changed partner show notable impacts on peer relationships, whereas single-parent status has limited effects. Fixed-effects models confirm these patterns. These findings suggest that even subtle family dynamics are perceived by children and can affect their developmental trajectories, emphasizing the need to support parental relational well-being in interventions.

See extended abstract

 Presented in Session P2. Families, Fertility, and the Life Course 2