EVALUATING CONSTRUCT VALIDITY OF THE SLOSSON VISUAL-MOTOR PERFORMANCE TEST USING THE RASCH MEASUREMENT MODEL.
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| Title: | EVALUATING CONSTRUCT VALIDITY OF THE SLOSSON VISUAL-MOTOR PERFORMANCE TEST USING THE RASCH MEASUREMENT MODEL. |
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| Authors: | Brown, Ted1 ted.brown@medmonash.edu.au, Unsworth, Carolyn2 |
| Source: | Perceptual & Motor Skills. Apr2009, Vol. 108 Issue 2, p367-382. 16p. 1 Chart, 1 Graph. |
| Subject Terms: | *Slosson Intelligence Test, *Child development, *Visual learning, *Motor ability, *Students, Rasch models, Psychometrics, Neuropsychological tests, Psychology of movement |
| Geographic Terms: | Melbourne (Vic.), Victoria |
| Abstract: | The aim of this study was to evaluate the construct validity of the Slosson Visual-Motor Performance Test by applying the Rasch Measurement Model to evaluate the test's scalabiity, dimensionality, differential item functioning based on sex, and hierarchical ordering. Participants were 400 children ages 5 to 12 years, recruited from six schools in Melbourne, Victoria, Australia. The Slosson Visual-Motor Performance Test requires a child to copy 14 different geometric designs three times each for a total 42 scale items. Children completed the test under the supervision of an occupational therapist. Overall, 13 of 42 of the test items exhibited poor measurement properties. As nearly one-third of the scale items were problematic, the Slosson Visual-Motor Performance Test in its current form is not recommended for clinical use. [ABSTRACT FROM AUTHOR] |
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| Database: | Education Research Complete |
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