Identification of Attention-Deficit/Hyperactivity Disorder in Children with an Identified Oral Language Disorder: The Diagnostic Utility of the Quotient/ADHD System and the impact of Executive Function and Working Memory on Diagnosis

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Title: Identification of Attention-Deficit/Hyperactivity Disorder in Children with an Identified Oral Language Disorder: The Diagnostic Utility of the Quotient/ADHD System and the impact of Executive Function and Working Memory on Diagnosis
Author: Baker, Kristine Genovese
Abstract: Common symptomatology in oral language disorders and attention -deficit /hyperactivity disorder , including inattention , hyperactivity , and behavior associated with impaired executive function , impacts the validity of diagnostic evaluations . Research demonstrates that the identification of these disorders can be dependent on evaluation setting and clinicians' field of training . Inaccurate diagnosis predicts inappropriate and /or inadequate intervention , and hence , impaired functioning across multiple domains . Assessment instruments to improve the evaluation of attention -deficit /hyperactivity disorder in the context of impaired oral language are needed . The present study explored the impact of comorbid attention -deficit /hyperactivity disorder on attention , movement , executive function , and working memory in children with an identified oral language disorder . Utility of the Quotient /ADHD SystemTM , a continuous performance test with motion actigraphy , and the Children's Executive Functions Scale , a parent -report of executive function , for the accurate identification of an attention disorder in the context of impaired language was evaluated . The sample consisted of 51 children , between 6 and 13 years , with an orallanguage disorder ; 30 child participants met diagnostic criteria for attention -deficit /hyperactivity disorder . Children with and without comorbid attention -deficit /hyperactivity disorder were compared on four domains : attention ,movement , executive function , and working memory . Attention and movement were objectively measured with the Quotient /ADHD SystemTM . Executive functioning was assessed using the subscale and Total scores on the Children's Executive Functions Scale . Verbal and visual -spatial working memory were evaluated separately with Digit Span and Spatial Span subtests of the Wechsler Intelligence Scale for Children , Fourth Edition , Integrated . Ingestion of prescribed stimulant medication was delayed until after testing . Results of analyses of variance revealed significant group differences in movement , overall executive functioning , and behavioral inhibition ; differences in attention and working memory were not found . Logistic regression and discriminant function analyses supported the use of the Quotient /ADHD SystemTM and the Children's Executive Functions Scale for the identification of an attention disorder in this population . Exploratory analyses raise questions regarding attention -deficit /hyperactivity disorder subtypes and the not otherwise specified category . Findings have important implications for the evaluation of attention -deficit /hyperactivity disorder . Questions regarding the role of attentional mechanisms in oral language disorders and potential new adjunct interventions for improving language are highlighted .
URI: http : / /hdl .handle .net /2152 .5 /682
Date: 2009-09-04

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Identification of Attention-Deficit/Hyperactivity Disorder in Children with an Identified Oral Language Disorder: The Diagnostic Utility of the Quotient/ADHD System and the impact of Executive Function and Working Memory on Diagnosis. Graduate School of Biomedical Sciences. Available electronically from http : / /hdl .handle .net /2152 .5 /682 .

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