Effects of spousal, friend, and family relationships on marital instability across the first 16 years of marriage

We applied marital stress and stability frameworks to investigate how spousal, family, and friend dynamics contribute to marital instability risks during the first 16 years of marriage. Using longitudinal data from the Early Years of Marriage Project and a within-person approach, we examined how family and friend relationships temper or amplify marital risks in couples’ more troublesome years. We also considered the sociocultural contexts of gender and race. Both spouses from 373 newlywed mixed-gender couples (199 Black American, 174 White American couples) completed questionnaires in Years 1, 3, 7, and 16 of marriage. Dyadic multilevel models showed marital distress and instability increased over time, while spousal responsiveness, friend support, and family support decreased across the 16 years. Wives also had poorer marital and family evaluations than husbands. In the years with less responsiveness or more marital distress, having low family support or high family-related tension intensified negative marital effect; in contrast, having more family support or less family-related tension helped protect marriages. Nevertheless, marital instability risks were lowest in years with less distress or more spousal responsiveness, regardless of family support or tension. The benefits of spousal responsiveness and negative effects of family-related tension were particularly potent for Black spouses, showing strong marital and family effects on instability, for better or worse. These findings demonstrate that more positive and less negative marital dynamics may protect spouses from unsupportive or strained families. In contrast, lacking supportive family ties may be especially harmful to spouses in less responsive or more distressing marriages.