Sustained attention and executive functioning performance in attention-deficit/hyperactivity disorder
Number of pages
SourceChild Neuropsychology, 11, 3, (2005), pp. 285-294
Article / Letter to editor
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SW OZ BSI ON
The aim of this study was to further refine the cognitive phenotype of attention-deficit hyperactivity disorder (ADHD), with respect to the ability to sustain attention and executive functioning. Participants were 34 boys with ADHD (combined type) and 28 normal controls. The groups were closely matched for age and IQ. All participants were 12 years of age. Both groups performed a computerized sustained attention task and a response interference task. Measures related to speed, accuracy, and time on task were collected. We found that children with ADHD performed slower, less accurately, more impulsively, and with less stability than controls. Both groups produced more errors with increasing time on task, reflecting reduced vigilance. Importantly, no interaction with time on task was found. The overall pattern of results suggests that measures related to accuracy are more informative than measures related to speed of responding in refining the cognitive phenotype of ADHD.
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