Reliability of Movement Assessment Battery for Children, Age Band 2 (Second Edition): Exploratory Study
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Objective: The purpose was to explore the reliability of the Total Test Score (TTS) and three subsections of age band 2 of MABC-2 using test re-test and internal consistency measures. Patients and Methods: Forty typically functioning children (18 boys, 22 girls) (M = 9 years, 2 months, SD = 1 year, 3 months) were assessed twice, two weeks apart, by the same researcher in the same laboratory setting. Intra-class correlation (ICC) coefficient examined the test-retest stability whereas Cronbach’s alpha was used to examine the internal consistency of the items. Results: The normality, skewness and kurtosis of standard, component and percentile scores were examined first. Among the three scoring systems, the standard scores met the majority of the assumptions tested. Based on these scores, the testretest reliability revealed questionable stability for the TTS (ICC = .67), with balance exhibiting the poorest reliability across the three subsections (ICC = .56). The analysis of the internal consistency revealed a similar trend with aiming and catching exhibiting the lowest Cronbach alpha (.49) Conclusion: From the clinical perspective, caution is warranted when component and percentile scores are used. In terms of reliability, while the TTS was most stable, the analyses confirmed previous findings suggesting that overall the MABC-2 is not a reliable assessment tool for children between the ages of 7 to 10. Due to these findings, when using this age band the child should be retested and/or the inferences emerging from this test should be triangulated with other formal
assessment tests
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