Reaction Time and Index of Difficulty in Target-Striking Tasks with Changes in Direction

Author:

Fischman Mark G.1,Mucci W. Gregory2

Affiliation:

1. Motor Behavior Center, Auburn University

2. Department of Educational Psychology, Northern Illinois University

Abstract

Reaction time (RT) for two three-segment target-striking responses involving changes in direction of movement was studied as a function of differences in their additive index … index of difficulty (A-ID). In one condition the A-ID was 9.96 and in the other, 6.76. For 16 right-handed university students, mean RT was significantly faster for the condition in which the index was 6.76. Movement times were consistent with Fitts' Law. The data support Sidaway, Christina, and Shea's 1988 prediction that for target-striking movements with changes of direction, RT is a function of the cumulative series of movement constraints.

Publisher

SAGE Publications

Subject

Sensory Systems,Experimental and Cognitive Psychology

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