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Measuring advanced motor skills in children with cerebral palsy: further development of the Challenge module
Cheryl M Glazebrook1, F Virginia Wright
1University of Manitoba (Dr Glazebrook), Winnipeg, Manitoba, Canada; Bloorview Research Institute and Department of Physical Therapy, University of Toronto (Dr Wright), Toronto, Ontario, Canada.
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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