The transition to first-time parenthood can be challenging for couples. Using a sample of 848 ethnically diverse couples from the Fragile Families and Child Wellbeing Study across the first 3 years of parenthood, we investigated the longitudinal and dyadic associations of each parents' parental stress, supportive coparenting, and relationship quality. Results from an actor-partner interdependence model indicated that supportive coparenting significantly predicted higher relationship quality for both mothers and fathers. Fathers' supportive coparenting significantly buffered the effects of mothers' parental stress on relationship quality. Also, the unique dyadic contexts of each parents' supportive coparenting, and also both partners' parental stress were significantly associated with relationship quality. Clinical implications from these findings are discussed through commonly used clinical theories.

Using the National Longitudinal Study of Adolescent Health, we tested latent growth models examining whether the number of friends using alcohol and family cohesion were linked with trajectories of binge drinking (N = 3,342) from adolescence (average age 15.06) into young adulthood (average age 27.93). Adolescents with higher family cohesion had lower rates of binge drinking in adolescence (b = -.07, p < .05), while those with more friends drinking alcohol were more likely to binge drink in adolescence (b = .51, p < .001), young adulthood (b = .22, p < .001), and had increasing trajectories of binge drinking across 14 years (b = -.29, p < .001). Clinically, we discuss Multiple-Family Group Interventions as a potential approach.

Guided by family systems theory, we used couple data (N = 1,778) from the Fragile Families and Child Wellbeing Study to examine the link between perceived infant negative emotionality, parenting stress, and couple relationship quality when the child was 1, 3, and 5 years. Using a latent actor-partner interdependence model, we tested dyadic direct and indirect effects for married and cohabiting couples. Parents who reported higher levels of perceived infant negative emotionality at age 1 had higher parenting stress at age 3. Mothers' and fathers' parenting stress at age 3 predicted lower levels of their own couple relationship quality and their partner's relationship quality at age 5. Parenting stress mediated the relation between perceived infant emotionality and couple relationship quality.

Using dyadic data from 961 married couples from the Relationship Evaluation Questionnaire project, the current study explored the direct association between family of origin climate and marital outcomes and the indirect association via relationship self-regulation (RSR). Results from the actor-partner interdependence model analysis indicated that family of origin climate was positively associated with marital stability directly and indirectly via the effects of RSR and marital satisfaction for both men and women. Results suggest that the experience one has in their family of origin is associated with their marital outcomes through their RSR. Actor-partner direct and indirect effects indicate that spouses' RSR may have important consequences for both partner's evaluation of the marriage. Implications for intervention and future research are discussed.

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