Functional limitations represent individuals' difficulty with completing essential activities of daily living, such as sitting, stooping, and walking. Though functional limitations have been linked to lower well-being outcomes, less is known about potential protective factors for well-being in the experience of functional limitations. The present study used archival data from the MIDUS Refresher study to evaluate how sleep and salient aspects of identity may alter the association between the

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... erience of functional limitations and well-being. In particular, this study had two central aims: to examine the associations between functional limitations, life satisfaction, and affect and detect how aspects of identity may alter these associations, and to examine the potential moderating effect of sleep quality and quantity on the association between functional limitations, life satisfaction, and affect. The current study revealed that functional limitations are negatively associated with life satisfaction and the positivity ratio and provided evidence for the importance of age, racial identity, perceived burden, and global sleep quality in the lived experience of functional limitations. Implications of these findings are discussed.