An examination of the relationship between movement problems and four common developmental disorders
Curtin Health Innovation Research Institute, Curtin University of Technology, GPO Box U1987, Perth 6845, Western Australia, Australia.Human movement science (Impact Factor: 1.6). 11/2009; 29(5):799-808. DOI: 10.1016/j.humov.2009.09.005
It has been well recognized since the days of "minimal brain dysfunction" (Clements, 1966) that various developmental disorders have a shared aetiology. Poor motor coordination has been implicated as one of the factors in these relationships. This study examines the different patterns in symptomatology of five developmental disorders, namely developmental coordination disorder (DCD), attention-deficit/hyperactivity disorder (ADHD), reading disorder (RD), oppositional defiant disorder (ODD), and conduct disorder (CD) in order to build on the genetic work from Martin, Levy, Piek, and Hay (2006) and Martin, Piek, and Hay (2006) examining the overlap of these disorders. Latent class analysis was used on questionnaire data from 1304 families from the Australian twin ADHD project (ATAP) to examine the patterns of comorbidity of the five disorders. We confirmed and added detail to the shared symptoms between DCD, ADHD, RD, and ODD, but found no links between CD symptoms and any other disorders. Despite the close link previously identified with ODD and CD, this finding suggests a different aetiology for CD.
Conference Paper: Yield enhancement designs for WSI cube connected cycles[Show abstract] [Hide abstract]
ABSTRACT: Yield enhancement designs for wafer-scale cube-connected cycles (CCCs) are presented and analyzed. Improvements in yield can be achieved through silicon area reduction and/or through the incorporation of defect/fault tolerance in the architecture. Consequently, a compact layout strategy is proposed for CCCs. An implementation of wafer-scale CCCs based on a universal building block is presented. This implementation facilitates the introduction of redundancy to achieve direct-tolerance. Expressions for the yield of various yield enhancement designs are derived and compared numerically for several sizes of wafer-scale CCCs
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ABSTRACT: It is known that developmental coordination problems in children with ADHD are very common. However, it is not clear whether different subtypes of coordination problems are associated with ADHD comorbidities, inattentiveness severity, and impulsivity/hyperactivity severity. A clinical sample of 122 children and adolescents with ADHD and their parents were interviewed. The parents completed the validated and reliable Farsi version of DCD-Q regarding their children. The internal reliability of the DCD-Q was high for the full scale and the subscales. The confirmatory factor analysis indicated that the fit for the hypothesized factor structure of the DCD-Q was poor. Linear regression analysis indicated that the scores of validated DCD-Q in children with ADHD, except for the fine motor/hand writing score, were not predicted by the variables of gender, handedness, age, inattentiveness score, hyperactivity/impulsivity score, and oppositional defiant behavior score. The fit for the hypothesized factor structure of the DCD-Q is poor in children with ADHD. Fine motor/hand writing was predicted by inattention severity. The other subtypes of developmental coordination problems in children with ADHD cannot be attributed to the variables of gender, inattentiveness severity, hyperactivity/impulsivity severity, comorbidity with separation anxiety symptoms and oppositional defiant behavior score, and handedness.
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