Roadside judgments in children with Developmental Co-ordination Disorder
Purcell, Catherine, Wann, John P., Wilmut, Kate and Poulter, Damian (2011) Roadside judgments in children with Developmental Co-ordination Disorder. Research in Developmental Disabilities, 32 (4). pp. 1283-1292. ISSN 0891-4222 (doi:10.1016/j.ridd.2010.12.022)Full text not available from this repository.
As pedestrians, the perceptual ability to accurately judge the relative rate of approaching vehicles and select a suitable crossing gap requires sensitivity to looming. It also requires that crossing judgments are synchronized with motoric capabilities. Previous research has suggested that children with Developmental Co-ordination Disorder (DCD) may have deficits in visual processing, specifically in detecting visual motion. It is possible, therefore that this population are at greater risk at the roadside. In a series of motion prediction tasks, several component roadside skills were assessed in 15 children with DCD, or at risk of DCD, aged between 6 and 11 years along with 15 typically developing age and gender matched controls. First, threshold errors for relative approach rate judgments (looming) were measured when vehicle size (car or truck) varied. Second, thresholds for crossing gap selection were measured for vehicle approach speeds of 32, 48, 64 and 80 km/h (20–50 mph). These were related to the walking speeds of children of different ages and profiles. We found that children with DCD showed a deficit in making relative approach rate judgments, using looming, which suggests they may not discern that a vehicle is travelling faster than the urban speed limit. Children with DCD also left considerably longer temporal crossing gaps than controls perhaps reflecting a lack of confidence in their ability, these preferred gaps were over twice the average inter-car gaps that occurred on roads around their school. Our findings raise a number of issues concerning children with DCD and their competence and potential limitations as pedestrians.
|Additional Information:|| Available online 17 January 2011.  In Research in Developmental Disabilities, Volume 32, Issue 4, July–August 2011 - Special Issue: Developmental Coordination Disorder (DCD).  Supplementary data: Supplementary data associated with this article can be found, in the online version, at doi://dx.doi.org/10.1016/j.ridd.2010.12.022 .|
|Uncontrolled Keywords:||Developmental Co-ordination Disorder, transport, road crossing, time, speed, looming, time to contact, children, vision, perception|
|Subjects:||B Philosophy. Psychology. Religion > BF Psychology|
|School / Department / Research Groups:||School of Health & Social Care|
School of Health & Social Care > Department of Psychology & Counselling
|Last Modified:||14 May 2013 13:08|
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