title: Classification Accuracy of Sequentially Administered WAIS-IV Short Forms.
abstract: A Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV) short form (SF) may be effective for ruling out subnormal intelligence. To create a useful SF, subtest administration should follow the order prescribed in the manual and, depending upon individual performance, be terminated after completion of 2, 3, 4, or 5 subtests. One hundred and twenty-two patients completed the WAIS-IV. In two analyses, Full-Scale IQs (FSIQs) ≤69 and ≤79 were classified as impairment. Classification accuracy statistics indicated that all SFs using both cutoff scores exceeded the base rate (i.e., 14% and 34%) of subnormal intelligence, with hit rates ranging from 84% to 95%. The FSIQ cutoff of ≤69 had poor sensitivity for detecting impaired intellectual functioning with the 2-, 3-, 4-, and 5-subtest SFs; specificity, positive predictive value (PPV), and negative predictive value (NPV) were excellent for each SF. With the FSIQ cutoff of ≤79, sensitivity was strong to excellent for the 3-, 4-, and 5-subtest SFs as were specificity, PPV, and NPV.
authors.affiliation: a Psychological Science , University of Central Missouri , Warrensburg , Missouri.
authors.forename: Joseph J
authors.initials: JJ
authors.lastname: Ryan
authors.affiliation: a Psychological Science , University of Central Missouri , Warrensburg , Missouri.
authors.forename: David S
authors.initials: DS
authors.lastname: Kreiner
authors.affiliation: b Center for Neuroscience and Neurological Recovery , Methodist Rehabilitation Center , Jackson , Mississippi.
authors.forename: Samuel T
authors.initials: ST
authors.lastname: Gontkovsky
authors.affiliation: c Department of Neurology, Medical College of Wisconsin , Milwaukee , Wisconsin.
authors.forename: Laura
authors.initials: L
authors.lastname: Glass Umfleet
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019540:Area Under Curve; D003072:Cognition Disorders / Q000145:classification* / Q000175:diagnosis*; D032882:Comprehension / Q000502:physiology; D005260:Female; D006801:Humans; D007360:Intelligence / Q000502:physiology; D008297:Male; D008568:Memory / Q000502:physiology; D008875:Middle Aged; D014888:Wechsler Scales; D055815:Young Adult
keywords: WAIS-IV; classification accuracy; intelligence; short form