Effect of Duration of Warning Signal on Reaction Times of Mental Defectives
- 1 August 1965
- journal article
- research article
- Published by SAGE Publications in Perceptual and Motor Skills
- Vol. 21 (1), 179-182
- https://doi.org/10.2466/pms.1965.21.1.179
Abstract
Two groups of retardates were tested on a reaction time (RT) task. For one group, the warning signal came on and remained for the entire preparatory interval (PI) (filled condition). For the other, the warning signal appeared for 1.5 sec. at the beginning of the PI (unfilled condition). The PIs were 2, 4, 8, and 12 sec. Twenty-six trials were given at each PI. The unfilled condition produced faster RTs than the filled condition. The main effects of PI were also significant. Results are compared and contrasted with those of a similar study.Keywords
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