Dyadic Short Forms of the Wechsler Adult Intelligence Scale-IV

• Published in: Archives of clinical neuropsychology Vol. 30; no. 5; pp. 404 - 412
• Main Authors: Denney, David A, Ringe, Wendy K, Lacritz, Laura H
• Format: Journal Article
• Language: English
• Published: United States 01.08.2015
• Subjects: Adult; Aged; Aged, 80 and over; Female; Humans; Intelligence - physiology; Male; Middle Aged; Nervous System Diseases - diagnosis; Psychometrics - instrumentation; Reproducibility of Results; Wechsler Scales - standards; Wechsler Scales - statistics & numerical data; Young Adult; Short form; Wechsler; Intelligence; Assessment
• ISSN: 0887-6177; 1873-5843
• DOI: 10.1093/arclin/acv035

Full Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV) administration can be time-consuming and may not be necessary when intelligence quotient estimates will suffice. Estimated Full Scale Intelligence Quotient (FSIQ) and General Ability Index (GAI) scores were derived from nine dyadic short forms using individual regression equations based on data from a clinical sample (n = 113) that was then cross validated in a separate clinical sample (n = 50). Derived scores accounted for 70%-83% of the variance in FSIQ and 77%-88% of the variance in GAI. Predicted FSIQs were strongly associated with actual FSIQ (rs = .73-.88), as were predicted and actual GAIs (rs = .80-.93). Each of the nine dyadic short forms of the WAIS-IV was a good predictor of FSIQ and GAI in the validation sample. These data support the validity of WAIS-IV short forms when time is limited or lengthier batteries cannot be tolerated by patients.