Subscribe to thousands of academic journals for just $40/month
Read and share the articles you need for your research, all in one place.

Quantifying the Performance Limitations of Older and Younger Adults in a Target Acquisition Task

Details

Publisher
American Psychological Association
Copyright
Copyright © 1997 by American Psychological Association
ISSN
0096-1523
eISSN
1939-1277
D.O.I.
10.1037/0096-1523.23.6.1644
Publisher site
See Article on Publisher Site

Preview Only

Expand Tray Hide Tray

Quantifying the Performance Limitations of Older and Younger Adults in a Target Acquisition Task

Abstract

In a stationary target acquisition task, both 65-year-old and 20-year-old adults exhibited a negatively accelerated curvilinear relationship between the spatial variability of submovement endpoints and average submovement velocity. For high velocities, the variability was greater for the older adults. This elevated motor noise is considered a primary cause of their slower performance. Both age groups also exhibited a linear relationship between submovement duration and the logarithm of submovement relative accuracy. A stochastic model indicates that the two age groups were similar in the strategies they used to compose single movements from a variety of submovements. However, when performing sequences of movements containing varied target distances, older adults exhibited a repetition effect whereas younger adults exhibited a contrast effect. Older adults may plan movements individually, whereas younger adults plan sequences.
Loading next page...

Preview Only. This article cannot be rented because we do not currently have permission from the publisher.

 
/lp/psycarticles-reg/quantifying-the-performance-limitations-of-older-and-younger-adults-in-RyzKBm9nGd