Children at risk for developmental coordination disorder: judgement of changes in action capabilities.
In three separate manipulations, a group of children at risk for developmental coordination disorder (DCD; five males, seven females; mean age 11y 6mo [SD 6.8mo] who were at or below the 15th centile on the Movement ABC) and a group of typically developing children (TDC; seven males, five females; mean age 11y 3mo [SD 6.8mo]) judged the limit of their standing horizontal reach (HRmax) under two conditions in which actual HRmax differed. The manipulations were: (1) one-hand versus two-hand reach; and (2) standard versus short effective foot-length; and (3) rigid versus compliant support surface. For the foot-length and support surface manipulations (but not for the hand manipulation), children correctly judged that their actual HRmax differed in the two conditions (p<.05). On all three manipulations, TDC made significantly larger adjustments in their judgements than did children at risk for DCD (p<0.05). The TDC group adjusted their judgements in the appropriate direction on all three manipulations, whereas the DCD group adjusted in the appropriate direction for the foot-length manipulation only. The results suggest that children at risk for DCD are less adept at detecting changes in the limits of their action capabilities.
Johnson
Daniel C
DC
School of Kinesiology and Center for Cognitive Sciences, University of Minnesota, Minneapolis, MN 55455, USA.
Wade
Michael G
MG
D000293:Adolescent; D000704:Analysis of Variance; D002648:Child; D002675:Child, Preschool; D005260:Female; D018737:Hand Strength; D006801:Humans; D007600:Judgment; D008297:Male; D009048:Motor Skills; D019957:Motor Skills Disorders / Q000175:diagnosis* / Q000503:physiopathology / Q000523:psychology; D009068:Movement; D009483:Neuropsychological Tests; D004856:Postural Balance; D011434:Proprioception; D011597:Psychomotor Performance; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D013028:Space Perception; D013647:Task Performance and Analysis