METRICAL CHARACTERISTICS OF THE TEST FOR DETERMINING REACTION SPEED USING SIMPLE MOVEMENT WITH CHILDREN OF PRESCHOOL AGE

Željko Krneta

This study was conducted in order to analyze the metrical characteristics of the test for determining reaction speed using simple movement with children of the preschool age. The sample group of 96 both sex preschool children, average age of 5,91 ±0,49 decimal years, was subject to a specially constructed system for regulating reactionary speed using simple movement. The computerized system consisted of a measuring board with a control light, a system for transferring the signal to the computer and software for registering and storing data. The subjects were in a standing position, positioned at arm’s length waiting for the signal light to flash, at which they would as swiftly as possible reach out and touch the measuring board. The task was conducted in five uneven intervals, randomly generated by the software. The data of the five task performances comprised the composite variable, which was then used for analyzing the metrical characteristics of the measuring process by using the RTT11G Script program in the statistical package IBM SPSS 20. The determined measures were: Kaiser’s measures of adequacy PSI2 (0,96), Spearman-Brown-Kuder-Richardson-Guttman-Chronbach alpha measure of reliability (0,87), Lord-Kaiser-Caffrey beta measure of adequacy of the first main component (0,87), Momirić’s lower border of reliability BETA 7 (0,90) and Guttman-Nicewandor coefficient RHO measure of reliability under Guttman’s model of measuring (0,95). All of the measures mentioned showed satisfying results which enabled us to conclude that the process of measuring that was used gave satisfying results with children of the preschool age. Analysis of the applicability of the measuring process showed that in practical use of the analyzed system it is enough to do 3 attempts with one trial attempt, which provides the necessary level of reliability of the measurement.

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