A Test of Motor (Not Executive) Planning in Developmental Coordination Disorder and Autism

Autor/inn/en	van Swieten, Lisa M.; van Bergen, Elsje; Williams, Justin H. G.; Wilson, Andrew D.; Plumb, Mandy S.; Kent, Samuel W.; Mon-Williams, Mark A.
Titel	A Test of Motor (Not Executive) Planning in Developmental Coordination Disorder and Autism
Quelle	In: Journal of Experimental Psychology: Human Perception and Performance, 36 (2010) 2, S.493-499 (7 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0096-1523
DOI	10.1037/a0017177
Schlagwörter	Autism; Developmental Disabilities; Perceptual Motor Coordination; Cognitive Processes; Planning; Selection; Object Manipulation; Bias; Adults; Children; Early Adolescents; Foreign Countries; United Kingdom (Scotland) + Suchen Sie Ihr Suchwort? Autismus; Entwicklungsstörung; Körperkoordination; Cognitive process; Kognitiver Prozess; Ablaufplanung; Planungsprozess; Auslese; Child; Kind; Kinder; Ausland
Abstract	Grip selection tasks have been used to test "planning" in both autism and developmental coordination disorder (DCD). We differentiate between "motor" and "executive" planning and present a modified motor planning task. Participants grasped a cylinder in 1 of 2 orientations before turning it clockwise or anticlockwise. The rotation resulted in a comfortable final posture at the cost of a harder initial reaching action on 50% of trials. We hypothesized that grip selection would be dominated by motoric developmental status. Adults were always biased towards a comfortable end-state with their dominant hand, but occasionally ended uncomfortably with their nondominant hand. Most 9- to 14-year-olds with and without autism also showed this "end-state comfort" bias but only 50% of 5- to 8-year-olds. In contrast, children with DCD were biased towards selecting the simplest initial movement. Our results are best understood in terms of "motor" planning, with selection of an easier initial grip resulting from poor reach-to-grasp control rather than an executive planning deficit. The absence of differences between autism and controls may reflect the low demand this particular task places on executive planning. (Contains 2 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10