Measuring Advanced Motor Skills in Children With Cerebral Palsy
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PURPOSE: Since previous testing of the Challenge Module revealed that response scales should assess performance speed as well as skill accomplishment, this study sought to develop empirically based dual-criterion (accomplishment and time) response options. METHODS: Challenge items were tested with a convenience sample of 34 children who were typically developing (4-10 years) to obtain time cut-points that could be applied to children/youth with cerebral palsy. Median/lower quartile item performance times were calculated within younger (<7.5 years) and older child (≥7.5 years) groups, and used as benchmarks for response option cut-points. Children's scores were recalculated using these cut-points to verify that differences in younger and older children's abilities and times were captured. RESULTS: Mean scores were 48.9% and 87.2% for younger and older groups, reflecting expected developmental progression. Further response revision captured high-level movement control older children exhibited. CONCLUSION: The revised Challenge measures skill accomplishment, speed, and quality.
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