Moderated mediation in relationship education: Communication, commitment, and sociodemographic disadvantage

This study tested moderated mediation-that is, whether the mechanisms of program impacts are different for different groups of people-in the Supporting Healthy Marriage (SHM) study of relationship education (RE) programs for low-income married couples. Large-scale evaluations of RE programs have yielded small effects in community settings. Understanding program mechanisms specific to disadvantaged populations may help improve program impacts. This study explored whether communication and commitment mediated program effects on relationship outcomes in the SHM study for participants with relatively higher or lower levels of sociodemographic disadvantage. The present study included all 6,298 couples who enrolled in the SHM study. Data on self-reported communication skills, commitment, happiness, warmth/support, conflict, and psychological abuse were used from wives' and husbands' 12-month follow-up assessments, and a risk index was constructed from nine baseline indicators of social, economic, and demographic disadvantage. Analyses used structural equation modeling to test (a) mediation by communication and commitment, and (b) moderation of the mediation paths by level of disadvantage. The programs improved all relationship outcomes measured. Communication mediated program impacts only for couples with moderate or low disadvantage. Commitment mediated program impacts for participants reporting lowest disadvantage only, with more evidence of mediation for wives than husbands. Further research is needed to determine mechanisms of RE among highly disadvantaged populations to improve services for those at highest risk of relationship distress and dissolution. (PsycInfo Database Record (c) 2022 APA, all rights reserved).