The Gordon Diagnostic System and WISC-III Freedom from Distractibility Index: validity in identifying clinic-referred children with and without ADHD.

Full Abstract

Gordon Diagnostic System and WISC-III scores for clinic-referred 6- to 16-yr.-olds (184 with ADHD Combined Type and 46 without ADHD) were analyzed to evaluate the combination of scores and cutpoints that maximized diagnostic accuracy. Using an "ADHD cutpoint" of IQ minus the GDS Composite score > or = 13, 87.8% of the children were correctly identified as having or not having ADHD. IQ minus Freedom from Distractibility > 0 yielded 73.5% accuracy. When the two meaures were combined to create new criteria (IQ minus GDS Composite > or = 13 or IQ minus Freedom from Distractibility > or = 11), diagnostic accuracy increased to 90.9% and negative predictive power improved substantially. Diagnostic agreement between the Gordon Diagnostic System and Freedom from Distractibility was 70%, suggesting that the two tests measure both similar and unique traits.

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Author information

Author/s: Mayes, Susan Dickerson (SD); Calhoun, Susan L (SL);

Affiliation: Department of Psychiatry, The Pennsylvania State University College of Medicine, USA. SueDMayes@aol.com

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Validation Studies

Journal: Psychological reports (Psychol Rep), published in United States. (Language: eng)

Reference: 2002-Oct; vol 91 (issue 2) : pp 575-87

Dates: Created 2002/11/05; Completed 2002/12/05; Revised 2006/11/15;

PMID: 12416852, status: MEDLINE (last retrieval date: 11/6/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adolescent
Ambulatory Care Facilities
Attention Deficit Disorder with Hyperactivity - diagnosis
Child
Female

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