The walking intervention will begin following baseline assessments and will be continued for 12 weeks. Participants will be given a pedometer to use daily and log their daily steps, with an identified goal of increasing step counts by 3000 steps a day over the course of the intervention. After obtaining a week long baseline step count, individuals in the intervention group will progressively increase their step counts by 100 steps daily each week for the first three weeks, by 200 steps daily for weeks four through six, by 300 steps daily for weeks seven through nine, and by 400 steps daily for weeks ten through twelve. Mean baseline step counts for sedentary older adults in our pilot work were 4150 per day; therefore, most participants will almost double their daily activity by the end of the intervention.

The Rivermead Behavioral Memory Test (RBMT) is an ecologically valid assessment of cognitive functioning that tests some skills specifically trained in the CT condition (e.g., name learning, and story learning) but also additional untrained skills such as prospective memory. Belongings subtest scaled scores: Minimum score = 1, Maximum score = 19; higher values represent better performance.

The Everyday Cognition Scale (ECog) assesses (via informant report) everyday cognitive functioning in memory, language, visuospatial, and executive functioning domains. Average total score was used: Minimum = 1, Maximum = 4, higher scores indicate greater impairment

Self report assessment of quality of life specific to older adults. Assessment covers life overall, health, social relationships and participation, independence, control over life and freedom, home and neighborhood, psychological and emotional well-being, financial circumstances, leisure/activities, and culture and religion. Total score minimum = 35, max = 175; lower scores indicate better quality of life.

Walking Intervention: The walking intervention will begin following baseline assessments and will be continued for 12 weeks. Participants will be given a pedometer to use daily and log their daily steps, with an identified goal of increasing step counts by 3000 steps a day over the course of the intervention. After obtaining a week long baseline step count, individuals in the intervention group will progressively increase their step counts by 100 steps daily each week for the first three weeks, by 200 steps daily for weeks four through six, by 300 steps daily for weeks seven through nine, and by 400 steps daily for weeks ten through twelve. Mean baseline step counts for sedentary older adults in our pilot work were 4150 per day; therefore, most participants will almost double their daily activity by the end of the intervention.

The Rivermead Behavioral Memory Test (RBMT) is an ecologically valid assessment of cognitive functioning that tests some skills specifically trained in the CT condition (e.g., name learning, and story learning) but also additional untrained skills such as prospective memory. Belongings subtest scaled scores: Minimum score = 1, Maximum score = 19; higher values represent better performance.

Walking Intervention: The walking intervention will begin following baseline assessments and will be continued for 12 weeks. Participants will be given a pedometer to use daily and log their daily steps, with an identified goal of increasing step counts by 3000 steps a day over the course of the intervention. After obtaining a week long baseline step count, individuals in the intervention group will progressively increase their step counts by 100 steps daily each week for the first three weeks, by 200 steps daily for weeks four through six, by 300 steps daily for weeks seven through nine, and by 400 steps daily for weeks ten through twelve. Mean baseline step counts for sedentary older adults in our pilot work were 4150 per day; therefore, most participants will almost double their daily activity by the end of the intervention.