Academic journal article Research Quarterly for Exercise and Sport

Examination on the Reliability of a Racquetball Skills Test Battery Using Univariate and Multivariate Models. (Measurement)

Academic journal article Research Quarterly for Exercise and Sport

Examination on the Reliability of a Racquetball Skills Test Battery Using Univariate and Multivariate Models. (Measurement)

Article excerpt

The American Alliance for Health, Physical Education, Recreation, and Dance has consistently promoted the need for reliability and validity evidence of tests and test batteries. Wood and Safrit (1987) noted that estimates of battery reliability have typically been derived from estimates of individual test items and that multivariate models may be a better method of evaluating reliability of a multivariate construct (e.g., skills test). The purpose of this investigation was to compare the results of both univariate and multivariate models in the evaluation of battery reliability. Participants (N = 131) were voluntary undergraduate students (Mage = 23 years old) from university racquetball courses. A racquetball skills test battery (Lam & Zhang, 2002) was administered to participants on two occasions separated by 2--4 days. Test items included service placement to the left and right, forehand and backhand power drive, forehand and backhand power shot placement, ceiling shot, and wall rally. The mean of 20 trial s for each item was used as the test item score. Wall rally was the lone exception, with the mean of three trials accounting for the score. One-way intraclass correlation coefflcients (ICC) were used to determine test-retest reliability of individual items. …

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