Healthier and Happier? A 3-Year Longitudinal Investigation of the Prospective Associations and Concurrent Changes in Health and Experiential Well-Being.

Global well-being is positively correlated with health. Moreover, studies suggest that health and global well-being predict changes in one another across time. Fewer studies, however, have examined the extent to which health is associated with daily emotional experiences-especially longitudinally. The present study examined the longitudinal associations between health and both global and experiential well-being, assessed 4 times across 3 years. Moreover, we used advanced analyses-random-intercept cross-lag models-which address limitations of traditional cross-lag models. Results revealed health and well-being generally did not prospectively predict changes in one another across 1 year. In contrast, year-to-year changes in health were correlated with simultaneous changes in well-being-with effect sizes being largest for global well-being. These findings suggest that health and well-being change together in processes that unfold relatively quickly. Finally, using traditional cross-lag models, numerous potentially illusory prospective associations between health and well-being emerged, underscoring the importance of using appropriate longitudinal statistical models.