Citation

Jagacinski RJ, Liao MJ, Fayyad EA. Psychol. Aging 1995; 10(1): 8-19.

Affiliation

Ohio State University, Department of Psychology, Columbus 43210-1222, USA.

Copyright

(Copyright © 1995, American Psychological Association)

DOI

unavailable

PMID

7779320

Abstract

Older and younger adults manually tracked sinusoidal input signals. Older adults exhibited 2 forms of slowing. First, they lagged behind the target somewhat more than younger adults. Second, they made considerably smaller movements than the younger adults. Because the velocity of a sinusoidal pattern is proportional to its amplitude, these smaller movements were also slower. Both older and younger adults made smaller movements with a compensatory display and with higher frequency inputs. The high degree of proportionality among these effects was taken as evidence for generalized slowing by the older adults. This slowing may prevent older adults from successfully adjusting an internal pattern generator to match their motions to the sinusoidal input signal.

Language: en