Long-term interparental conflict behavior and knowledge change after a brief family intervention

Area of Science:

• Psychology
• Family Studies
• Intervention Science

Background:

• Translational research on marital and family conflict intervention has a notable gap.
• Effective interventions are needed to improve family communication and adolescent adjustment.

Purpose of the Study:

• To examine the long-term effectiveness of the Family Communication Project (FCP) intervention.
• To assess improvements in interparental constructive conflict behavior, resolution, and knowledge up to 3 years postintervention.
• To identify factors moderating treatment effects and change trajectories.

Main Methods:

• A series of multilevel models were used to analyze longitudinal data from 225 families.
• Families were randomly assigned to parent-adolescent, parent-only, self-study, or no-treatment control groups.
• Piece-wise slopes modeled nonlinear change trajectories from pretest to 3-year follow-up.

Main Results:

• Parents in treatment conditions showed significant nonlinear improvements in conflict behavior, resolution, and knowledge, with sustained growth over 3 years.
• Higher baseline marital hostility was associated with greater initial treatment response but also faster decline.
• Fathers demonstrated stronger long-term effects for conflict knowledge, and higher baseline marital adjustment in fathers predicted less decline in dyadic conflict resolution.

Conclusions:

• The FCP intervention yields sustained improvements in family conflict management skills.
• Intervention effectiveness and change trajectories vary based on baseline characteristics like marital hostility and gender.
• Understanding within- and between-family differences in change is crucial for optimizing intervention delivery and outcomes.