TY - JOUR
T1 - The Gordon Diagnostic System and WISC-III freedom from distractibility index
T2 - Validity in identifying clinic-referred children with and without ADHD
AU - Mayes, Susan Dickerson
AU - Calhoun, Susan L.
PY - 2002/10
Y1 - 2002/10
N2 - 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 ≥ 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 measures were combined to create new criteria (IQ minus GDS Composite ≥ 13 or IQ minus Freedom from Distractibility ≥ 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.
AB - 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 ≥ 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 measures were combined to create new criteria (IQ minus GDS Composite ≥ 13 or IQ minus Freedom from Distractibility ≥ 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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U2 - 10.2466/pr0.2002.91.2.575
DO - 10.2466/pr0.2002.91.2.575
M3 - Article
C2 - 12416852
AN - SCOPUS:0036782714
SN - 0033-2941
VL - 91
SP - 575
EP - 587
JO - Psychological reports
JF - Psychological reports
IS - 2
ER -