Mental rotation performance in young adults with and without developmental coordination disorder |
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| Institution: | 1. Cognitive Neuroscience Unit, School of Psychology, Deakin University, Melbourne, VIC, Australia;2. College of Sport and Exercise Science & Institute of Sport Exercise and Active Living, Victoria University, Melbourne, VIC, Australia;1. Cognitive Neuroscience Unit, School of Psychology, Deakin University, Burwood, VIC 3125, Australia;2. Institute of Sport, Exercise, and Active Living, College of Sport and Exercise Science, Victoria University, Footscray, VIC 3011, Australia;1. Radboud University Nijmegen, Behavioural Science Institute, PO Box 9104, 6500 HE Nijmegen, The Netherlands;2. Australian Catholic University, School of Psychology, 115 Victoria Pde, Melbourne, VIC 3450, Australia;1. Institute of Sport, Exercise and Active Living and College of Sport and Exercise Science, Victoria University, Melbourne, Australia;2. Cognitive Neuroscience Unit, School of Psychology, Deakin University, Melbourne, Australia;3. Radboud University Nijmegen, Behavioural Science Institute, Nijmegen, The Netherlands;4. Australian Catholic University, School of Psychology, Melbourne, Australia |
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| Abstract: | While there have been consistent behavioural reports of atypical hand rotation task (HRT) performance in adults with developmental coordination disorder (DCD), this study aimed to clarify whether this deficit could be attributed to specific difficulties in motor imagery (MI), as opposed to broad deficits in general mental rotation. Participants were 57 young adults aged 18–30 years with (n = 22) and without DCD (n = 35). Participants were compared on the HRT, a measure of MI, and the letter number rotation task (LNRT), a common visual imagery task. Only participants whose behavioural performance on the HRT suggested use of a MI strategy were included in group comparisons. Young adults with DCD were significantly less efficient compared to controls when completing the HRT yet showed comparable performance on the LNRT relative to adults with typical motor ability. Our data are consistent with the view that atypical HRT performance in adults with DCD is likely to be attributed to specific difficulties engaging in MI, as opposed to deficits in general mental rotation. Based on the theory that MI provides insight into the integrity of internal action representations, these findings offer further support for the internal modelling deficit hypothesis of DCD. |
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