Effects of aging and schedules of knowledge of results on motor learning.

Little research has been conducted on aging and the learning of motor skills. In this study, we examined the effects of different schedules of knowledge of results (KR) on the acquisition and retention of a movement timing task by young adults (20-23 years) and older adults (60-82 years). The results indicated that there were differences between young and older adults in the accuracy and consistency of motor performance when KR was provided. Accuracy effects persisted during a retention interval when KR was no longer provided, although there were no differences in variability. There were no interactions of age with any of the KR-related variables. These findings suggest that the ability to process KR, and the effects of KR on motor learning, are similar in young and older adults. These findings are discussed in terms of age-related issues in movement control and learning processes.