Journal
HUMAN MOVEMENT SCIENCE
Volume 43, Issue -, Pages 78-89Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.humov.2015.07.005
Keywords
Procedural memory; Automaticity; Dual-task; Comorbidity; Learning disorder
Funding
- Toulouse University Hospital (Hotel-Dieu, Toulouse, France)
- [1015502NoID-RCB 2010-A00909-30]
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Objective: There is increasing evidence to suggest that developmental dyslexia (DD) and developmental coordination disorder (DCD) actually form part of a broader disorder. Their frequent association could be justified by a deficit of the procedural memory system, that subtends many of the cognitive, motor and linguistic abilities that are impaired in both DD and DCD. However, studies of procedural learning in these two disorders have yielded divergent results, and in any case no studies have so far addressed the issue of automatization (dual-task paradigm). Methods: We administered a finger tapping task to participants aged 8-12 years (19 DCD, 18 DD, and 22 with both DD and DCD) to explore procedural learning and automatic movements in these three groups of children, comparing motor performances at the preleaming stage, after 2 weeks of training, and in a post-training dual-task condition. Results: First, results indicated that all the children were able to learn a sequence of movements and even automatize their movements. Second, they revealed between-groups differences in procedural/automatization learning abilities, setting the DCD group apart from the other two. Third, contrary to our expectations concerning comorbidity, they suggested that the DD + DCD association does not have an additional impact on behavioral performances. (C) 2015 Elsevier B.V. All rights reserved.
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