Reliability and validity of the Developmental Coordination Disorder Questionnaire (DCD-Q) was assessed using a population-based sample of 608 children (311 males, 297 females; mean age 7 y 8 mo [SD 2 y 4 mo]), a sample of 55 children with DCD referred to a rehabilitation clinic, and a control sample of 55 children matched for age and sex (48 males, seven females in each sample; mean age 8 y 3 mo [SD 2 y]). The DCD-Q is reliable and valid in the age range for which the questionnaire was developed(8 y-14 y 7 mo) and in a younger age range (4-8 y). Sensitivity and specificity of the DCD-Q was assessed using the Movement Assessment Battery for Children as the criterion standard. The DCD-Q met the standard for sensitivity (80%) in the clinic-referred sample (81.6%), but not in the population-based sample (28.9%). Specificity almost reached the standard of 90%: 89% in the population-based sample and 84% in the clinic-referred sample.
The aims of this study were to investigate fine motor skills of children with both attention-deficit-hyperactivity disorder (ADHD) and developmental coordination disorder (DCD) and those of a control group, and to examine the effects of methylphenidate on these skills. A group of 12 children with ADHD-DCD (11 males, one female; mean age 9y 8mo [SD 1y 7mo]) and 12 age-and sex-matched controls (mean age 9y 7mo [SD 1y 2 mo]) participated. The manual dexterity subtests of the Movement Assessment Battery for Children, the concise assessment method for children's handwriting, and a computerized graphomotor task were used. Results demonstrated that children with ADHD-DCD performed more poorly on the manual dexterity subtests, had poorer quality of handwriting, and drew more rapidly, more fluently, but less accurately than controls on the graphomotor task. On methylphenidate, manual dexterity and quality of handwriting improved, and strokes on the graphomotor task became less fluent but more accurate. ADHD is characterized by persistent symptoms of inattention, impulsivity, and hyperactivity, affecting 3 to 5% of school-age children. Up to 50% of children with ADHD also have motor coordination problems that are severe enough to meet criteria for DCD. In DCD, children demonstrate functional motor performance deficits not explained by the child's (chronological) age or intellect, or by other neurological or psychiatric disorders.
Aim The aim of this study was to investigate the validity and reliability of the Movement Assessment Battery for Children‐2 Checklist (MABC‐2).
Method Teachers completed the Checklist for 383 children (age range 5–8y; mean age 6y 9mo; 190 males; 193 females) and the parents of 130 of these children completed the Developmental Disorder Coordination Questionnaire 2007 (DCDQ’07). All children were assessed with the MABC‐2 Test. The internal consistency of the 30 items of the Checklist was determined to measure reliability. Construct validity was investigated using factor analysis and discriminative validity was assessed by comparing the scores of children with and without movement difficulties. Concurrent validity was measured by calculating correlations between the Checklist, Test, and the DCDQ’07. Incremental validity was assessed to determine whether the Checklist was a better predictor of motor impairment than the DCDQ’07. Sensitivity and specificity were investigated using the MABC‐2 Test as reference standard (cut‐off 15th centile).
Results The Checklist items measure the same construct. Six factors were obtained after factor analysis. This implies that a broad range of functional activities can be assessed with the Checklist, which renders the Checklist useful for assessing criterion B of the diagnostic criteria for DCD. The mean Checklist scores for children with and without motor impairments significantly differed (p<0.001). The scores for the Checklist/Test and DCDQ’07 were significantly correlated (rS=−0.38 and p<0.001, and rS=−0.36 and p<0.001, respectively). The Checklist better predicted motor impairment than the DCDQ’07. Overall, the sensitivity was low (41%) and the specificity was acceptable (88%).
Interpretation The Checklist meets standards for validity and reliability.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.