title: Mathematical problems in children with developmental coordination disorder.
abstract: Developmental coordination disorder (DCD) is a heterogeneous disorder, which is often co-morbid with learning disabilities. However, mathematical problems have rarely been studied in DCD. The aim of this study was to investigate the mathematical problems in children with various degrees of motor problems. Specifically, this study explored if the development of mathematical skills in children with DCD is delayed or deficient. Children with DCD performed significantly worse for number fact retrieval and procedural calculation in comparison with age-matched control children. Moreover, children with mild DCD differed significantly from children with severe DCD on both number fact retrieval and procedural calculation. In addition, we found a developmental delay of 1 year for number fact retrieval in children with mild DCD and a developmental delay of 2 years in children with severe DCD. No evidence for a mathematical deficit was found. Diagnostic implications are discussed.
authors.affiliation: Department of Experimental Clinical and Health Psychology, Ghent University, Belgium. Stefanie.Pieters@UGent.be
authors.forename: Stefanie
authors.initials: S
authors.lastname: Pieters
authors.forename: Annemie
authors.initials: A
authors.lastname: Desoete
authors.forename: Hilde
authors.initials: H
authors.lastname: Van Waelvelde
authors.forename: Ruth
authors.initials: R
authors.lastname: Vanderswalmen
authors.forename: Herbert
authors.initials: H
authors.lastname: Roeyers
mesh_terms: D000293:Adolescent; D002648:Child; D015897:Comorbidity; D002658:Developmental Disabilities / Q000175:diagnosis* / Q000453:epidemiology / Q000534:rehabilitation; D004519:Education, Special; D005260:Female; D006801:Humans; D007361:Intelligence Tests; D007859:Learning Disabilities / Q000175:diagnosis* / Q000453:epidemiology / Q000534:rehabilitation; D008297:Male; D008433:Mathematics / Q000193:education; D008606:Mental Processes; D009048:Motor Skills; D019957:Motor Skills Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000534:rehabilitation; D012720:Severity of Illness Index