Tseng, Han Yun, authorDiehl, Manfred, advisorBielak, Allison, committee memberLuong, Gloria, committee memberHenry, Kimberly, committee member2024-09-092024-09-092024https://hdl.handle.net/10217/239233As individuals age, they accumulate experiences that not only mark their position in the course of life, but also shape their feelings, beliefs, and attitudes towards aging, collectively known as subjective views of aging (VoA). Negative VoA, whether assessed explicitly through self-report questionnaires or implicitly via computer-administered subliminal priming tasks, consistently correlate with poorer self-rated health status, diminished functional outcomes, and reduced longevity in later life. Drawing upon the extensive VoA literature, this dissertation proposed three distinct yet related research themes of VoA, examining their measurement, their moderating role in buffering the impacts of declining health on subjective well-being (SWB), and their malleability via intervention. Specifically, the first manuscript in Chapter 2 validated a multidimensional VoA questionnaire, the Awareness of Age-Related Changes (AARC) scale, in a sample of Taiwanese older adults. This study also explored cross-cultural similarities and differences in AARC-gains and AARC-losses by examining measurement invariance with a comparable older adult sample in Germany. Chapter 3 investigated divergent trajectories of health and SWB from age 60s to 80s, known as the paradox of well-being in late life, using a 20-year longitudinal cohort study from Germany. To gain a more nuanced understanding of the well-being paradox, this manuscript explored the moderating role of VoA in the decoupled developmental trajectories of health and SWB. Chapter 4 focused on the malleability of adults' implicit and explicit VoA in the context of a randomized controlled trial (RCT). Whereas most interventions targeting older adults' negative VoA typically evaluated their efficacy based on explicit, self-reported VoA, this manuscript contrasted the intervention effects of the AgingPLUS program on explicit and implicit VoA. This study also examined the extent to which positive intervention-induced changes in explicit VoA were contingent upon varying levels of implicit VoA. Overall, the results derived from the three manuscripts aimed to (1) enhance the assessment and research of VoA in non-Western cultures and societies, (2) provide empirical support for VoA as positive age-related psychosocial processes contributing to high levels of well-being, and (3) inform the design of future interventions leveraging VoA for promoting successful and optimal aging among middle-aged and older adults. Overall, these findings underscored the importance of culturally sensitive approaches to measuring VoA across diverse aging populations. They also highlighted the potential of interventions promoting more positive VoA foster resilience and well-being in the second half of life.born digitaldoctoral dissertationsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.latent growth curve modelingparadox of well-beingviews of agingmultilevel modelingawareness of age-related changespsychometricsText