Few studies of adult playfulness exist, but limited research on older adults and playfulness suggests that playfulness in later life improves cognitive, emotional, social, and psychological functioning and healthy aging overall. Older adults represent a rapidly growing segment of the U.S. population, underscoring the need to understand the aging process. In this article, the authors report on the first three steps of a four-step, multimethod approach to test the hypothesis that playfulness is an important component of healthy aging in older adults. Step 1 determines the characteristics of older-adult playfulness, extending Barnett's (2007) study of young-adult playfulness and recruiting participants from a different age group (older adults rather than younger adults). Based on findings from Step 1, in Step 2 the authors develop the Older Adult Playfulness (OAP) scale to measure playfulness in older adults. In Step 3, they validate the reliability of the OAP scale. A forthcoming manuscript will report on the relationship between older adult playfulness and healthy aging (Step 4). (Contains 6 figures.)