Abstract
The aim of the current study was to investigate bio-psycho-behavioral associations between marital distress and the physical health of couples, with two different aspects of physical health outcomes receiving attention: physical illness and physical functional impairments over the middle years. Using an actor-partner interdependence model within a longitudinal approach and data from married heterosexual couples in enduring marriages (N = 370 dyads), we examined the mediating pathways which reflected biopsychosocial processes and addressed how trajectories spousal hostility may contribute to husbands' and wives' later health. The results indicated that hostile marital interactions in the early middle years could wear down couples' regulatory systems through greater psychological distress, more health-risk behaviors, and a higher body mass index (BMI), which in turn increased vulnerability to later physical health problems for both husbands and wives. For both husbands and wives, their evolved psychological distress influenced by both their own and their spouse's perceived spousal hostile behaviors, supported the stress-related dyadic process in the couples. The findings also emphasized the salient role of psychological distress in leading not only to an increased risk of physical illness directly but also to a higher risk of physical impairment through increased levels of BMI for both husbands and wives. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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