Dyadic Associations Between Conscientiousness Facets, Health, and Health Behavior Over Time

Previous studies show consistent associations between conscientiousness and health outcomes. However, less is known about how various facets of conscientiousness, of both individuals and their partners, are associated with changes in health in older adults over time. Applying the actor–partner interdependence model, we examined dyadic associations of broader conscientiousness and its six facets and changes in health, health behavior, and well-being in middle-aged and older couples. With a sample of 3,271 couples (N=6,542) from the Health and Retirement Study, we found that actor conscientiousness, orderliness, and industriousness were most reliably associated with better health outcomes over time. Partner orderliness was associated with better health and more positive health behavior. The remaining associations were near-zero in their effect sizes. Many of these associations persisted over the 10-year period of the study, and there was little evidence for gender differences or multiplicative interactions.