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Psychometric properties of the revised Developmental Coordination Disorder Questionnaire
Brenda N Wilson1, Susan G Crawford, Dido Green
1Calgary Health Region, Alberta Children's Hospital, and Department of Pediatrics, University of Calgary, Calgary, Alberta, Canada. Brenda.Wilson@AlbertaHealthServices.ca
Physical & Occupational Therapy in Pediatrics
|April 30, 2009
Summary
The revised Developmental Coordination Disorder Questionnaire (DCDQ) effectively screens young children for motor difficulties. This updated tool provides reliable identification of developmental coordination disorder in children aged 5-7 years.
Area of Science:
- Pediatric Psychology
- Developmental Psychology
- Motor Development
Background:
- The Developmental Coordination Disorder Questionnaire (DCDQ) is a parent-completed tool for identifying motor issues in children aged 8 to 14.6 years.
- There is a need to extend the DCDQ's applicability to younger children and refine its psychometric properties.
Purpose of the Study:
- To adapt the DCDQ for children aged 5 to 7 years.
- To revise existing items for enhanced clarity and develop new scoring methods.
- To evaluate the validity and reliability of the revised DCDQ.
Main Methods:
- An expert panel generated new items and refined existing ones.
- Psychometric analyses, including internal consistency and factor loading, were performed.
- The revised DCDQ was administered to 287 typically developing children (aged 5-15) and 232 children referred for therapy.
Main Results:
- The revised DCDQ demonstrated high internal consistency (alpha = .94).
- Logistic regression yielded age-specific cutoff scores with 85% sensitivity and 71% specificity.
- Significant differences were found between children with and without DCD, supporting construct validity.
- Correlations with established measures (MABC, VMI) supported concurrent validity.
Conclusions:
- The revised DCDQ is a psychometrically sound and valid screening tool for developmental coordination disorder in children aged 5 years and older.
- The updated questionnaire offers improved clinical utility for early identification of motor coordination difficulties.
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