Differences Between ADHD Inattentive and Combined Types on the CPT
- Raymond D. Collings
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Two samples of school-age boys with attention-deficit/hyperactivity disorder (ADHD-Combined and ADHD-Inattentive Types) and a non-ADHD control group were administered an “AX” version of the continuous performance task (CPT) to examine specific sustained attention deficits. Three levels of time-on-task were included to study performance declines, and 3 interstimulus intervals were included to examine vigilance deficits. As predicted by R. A. Barkley's and H. C. Quay's behavior inhibition deficit models (R. A. Barkley, 1997; H. C. Quay, 1997), the performance of the ADHD-Combined Type (ADHD-C) participants deteriorated more quickly than the other samples. No significant evidence of vigilance deficits among the inattentive (ADHD-IA) sample was found. These findings suggest that distinct criteria for the two ADHD subtypes may be warranted when the CPT is used for diagnostic assessment, and sustained attention-related declines in performance may be typical of the ADHD-C Type only.
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- Differences Between ADHD Inattentive and Combined Types on the CPT
Journal of Psychopathology and Behavioral Assessment
Volume 25, Issue 3 , pp 177-189
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers-Plenum Publishers
- Additional Links
- attention-deficit/hyperactivity disorder
- continuous performance task
- sustained attention
- behavior inhibition
- Author Affiliations
- 1. Department of Psychology, State University of New York College at Cortland, Cortland, New York, 13045