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Title: The visual control of hand movements in children with and without developmental coordination disorder
Author: Sellami, Chiraz Bensaad
ISNI:       0000 0004 2671 9574
Awarding Body: The University of Reading
Current Institution: University of Reading
Date of Award: 2008
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Children diagnosed with Developmental Coordination Disorder (DCD) have problems in motor coordination that are severe enough to interfere with educational achievement and activities of daily living. The underlying cause of the disorder, however, is yet to be established. Studies on eye-hand coordination show that aimed limb movements depend critically on information obtained from the eyes. The studies carried out in this thesis investigated eye-hand coordination in groups of children both with and without DCD in order to assess whether or not children with DCD use gaze appropriately and coordinate their eye and limb movements in the same manner as typically developing children without the disorder: poor use of gaze may result in poor development of motor control. A series of prehension tasks were used ranging from a simple pick and place task to a more complex stacking task where children had to choose blocks from a range of distracter blocks and build models in a prescribed order. The results showed clear developmental trends in the typically developing group in visuo-manual control for these tasks. The results for children with DCD suggested that they have similar eye-hand coordination to age-matched typically developing control children on a simple pick and place task. When the task became more complex, however, children with DCD showed a pattern of results: in some cases the children with DCD looked further ahead and in other cases their eyes were more tied to their hands compared to the controls. It was proposed that both 'strategies' indicate an increased reliance on visual information and may be related to an impaired ability to program movements in children with DCD. From the findings in this thesis, it appears to be the case that the children with DCD a are less effficient than typically developing children at using on-line feedback to control their movements which leads to slower movement and deceleration times.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available