Longitudinal Relationships Among Child School Engagement, Parental Monitoring, and Child Prosocial Behavior: A Child-Parent Synergistic Mechanism.

Numerous contextual factors have been identified that impact the development of children's prosocial behavior, yet the influence of child-initiated factors on prosocial behavior and its underlying mechanism remains unclear. This study employed three longitudinal models to examine in depth how children's school engagement may promote the development of their own prosocial behavior. Three-wave longitudinal data from 4691 children (M age = 9.480, SD = 0.507; 48.2% female) with 2-year intervals were used. Sequentially, a cross-lagged panel model, a random intercept cross-lagged panel model, and a parallel process latent growth model were constructed. The findings indicated that children's school engagement consistently predicted the future level, dynamic changes at within-person level, and long-term trends in their prosocial behavior, and these longitudinal relationships were partially mediated by parental monitoring. These results reveal a child-parent synergistic mechanism for the development of prosocial behavior, wherein children's school engagement both directly promotes their own prosocial behavior and simultaneously enhances prosocial behavior through eliciting increased parental monitoring.

Body mass index, internalizing behavior and executive function: examining trait-state effects from age 2 to 15.

This study aimed to examine the reciprocal relation between body mass index and internalizing behavior from age 2 to 15, and also the predictive role of executive function. This study included a subset sample of 640 children (47% were male) from the National Institute of Child Health and Development Study of Early Child Care and Youth Development. A refined random-intercept cross-lagged model was employed to analyze: (1) the reciprocal relation between children's body mass index and internalizing behavior assessed in eight waves from age 2 to 15; (2) the predictive role of executive functioning in both children's body mass index and internalizing behavior. Trait-level body mass index-to-internalizing behavior association was not found; a significant state-level prediction from body mass index in 5th grade to internalizing behavior in 6th grade was found. Executive function was significantly associated with trait-level body mass index, trait-level internalizing behaviors, and state-level internalizing behaviors. The findings suggest that deficits in children's executive functioning may be a shared risk associated with both high body mass index and internalizing behaviors. From an intervention perspective, this study highlighted the importance of targeting executive function to intervene in children's obesity or internalizing behaviors.

Optimism, pessimism and support in older couples: A longitudinal study.

OBJECTIVES: Optimism is linked to varied advantageous outcomes, ranging from improved health to better relationships, while pessimism is linked to reduced well-being. Relatively little is known about how optimism and pessimism may work together to shape the perception of support within marital relationships, and whether perceived support can affect couple-members' optimism and pessimism. METHOD: We used three waves of a nationally representative sample of older couples (N = 1681 couples), spanning a period of eight years. Partners reported perceived support, optimism, and pessimism in each wave. We used a random-intercept cross-lagged panel model (RI-CLPM) to test within- and between-person effects. RESULTS: At the within-person level, husbands', but not wife's, future expectations were associated with partners' perceived marital support; increases in husbands' pessimism on a given wave were related to decreases in husbands' perceived marital support at the next wave, and vice versa (i.e., actor effect). Within the same wave, increases in husbands' pessimism were associated with wives' decreased perceived marital support. At the between-person level, both partners' optimism and pessimism were associated with marital support. DISCUSSION: Findings suggest that changes in husbands' levels of pessimism propel marital support experiences of both partners. At the methodological level, results highlight the importance of examining interpersonal processes at both the within- and between-levels of analyses, as they may yield divergent patterns.