Knowledge of individuals' everyday preferences is a cornerstone of person-centered care (PCC). Initial evidence demonstrates the positive impact of honoring preferences in care for older adults receiving long-term services and supports (LTSS). Yet, the mechanisms through which preference-based care affects individual well-being remain poorly understood. This article proposes a theoretical model of PCC entitled the Preference-Based Model of Care that integrates the Theory of Human Motivation, Self-determination Theory, the Competence-Press Model of person and environment fit, the Living Systems Framework, and the Broaden-and-Build theory of positive emotions to deepen our understanding of the processes through which preference-based care affects well-being among older adults receiving LTSS. The Preference-Based Model of Care illustrates how goal-directed behaviors facilitate need fulfillment through the expression of individual preferences and how these behaviors mediate the relationship between person-environment fit and affect balance within a particular social, cultural, and political context. The Preference-Based Model of Care can advance research on PCC in LTSS and can inform LTSS clinical practice guidelines for older adults, regardless of functional or cognitive capacity.
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