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The speed-accuracy trade-off for a circle drawing task Daisuke Takagi 1 , Sanae Moriyama 1 , Hiroshi Nagasaki 1 1Department of Rehabilitation, Faculty of Medical Science and Welfare, Tohoku Bunka Gakuen University Keyword: (上肢運動協調性) , (円描画) , 高齢者 , (速度一精度トレードオフ) , Motor coordination , Circle drawing , Older adults , Speed-accuracy trade-off pp.371-379
Published Date 2008/8/15
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 The purpose of this study is to quantitatively analyze the performance of a drawing task by considering both speed and accuracy. Healthy young and older adults traced a target circle as quickly and accurately as possible. Movement time (MT) and absolute error (E) in the circle drawing task showed a trade-off relationship for young subjects, and MT was well approximated by a power curve of E. The relationship between MT and E for the elderly shifted towards longer MT and larger E as compared to the young subjects. The deviation of MT and E from the trade-off curve of young subjects was calculated as a measure of performance deterioration in the elderly. The deviation was significantly different from zero for the elderly, and larger in the non-preferred than the preferred hand. The results suggest that the measurement of speed and accuracy at the same time is essential for coordinated manual tasks.


Copyright © 2008, Japanese Association of Occupational Therapists. All rights reserved.

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電子版ISSN 印刷版ISSN 0289-4920 日本作業療法士協会

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