IQ estimate smackdown: Comparing IQ proxy measures to the WAIS-III

Ruth Spinks; Lowell W. McKirgan; Stephan Arndt; Kristin Caspers; Rebecca Yucuis; Christopher J. Pfalzgraf

doi:10.1017/S1355617709090766

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IQ estimate smackdown: Comparing IQ proxy measures to the WAIS-III

Journal article

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IQ estimate smackdown: Comparing IQ proxy measures to the WAIS-III

Ruth Spinks, Lowell W. McKirgan, Stephan Arndt, Kristin Caspers, Rebecca Yucuis and Christopher J. Pfalzgraf

Journal of the International Neuropsychological Society, Vol.15(4), pp.590-596

07/01/2009

DOI: 10.1017/S1355617709090766

PMID: 19573277

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Abstract

Brief assessments of general cognitive ability are frequently needed by neuropsychologists, and many methods of estimating intelligence quotient (IQ) have been published. While these measures typically present overall correlations with the Wechsler Adult Intelligence Scale (WAIS) Full Scale IQ, it is tacitly acknowledged that these estimates are most accurate within I standard deviation of the mean and that accuracy diminishes moving toward the tails of the IQ distribution. However, little work has been done to systematically characterize proxy measures at the tails of the IQ distribution. Additionally, while these measures are all correlated with the WAIS, multiple proxy measures are rarely presented in one manuscript. The Current article has two goals: (1) Examine various IQ proxies against Wechsler Adult Intelligence Scale (Third Version) scores, showing the overall accuracy of each measure against the gold standard IQ measure. This comparison will assist in selecting the best proxy measure for particular clinical constraints. (2) The sample is then divided into three groups (below, average, and above-average ability), and each group is analyzed separately to characterize proxy performance at the tails of the IQ distribution. Repeated measures multivariate analysis of variance compares the different proxy measures across ability levels. All IQ estimates are represented in tables so that they can be examined side by side. (JINS, 2009, 15, 590-596.)

Clinical Neurology

Life Sciences & Biomedicine

Neurosciences

Neurosciences & Neurology

Psychiatry

Psychology

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Details

Title: Subtitle: IQ estimate smackdown: Comparing IQ proxy measures to the WAIS-III
Creators: Ruth Spinks - University of Iowa
Lowell W. McKirgan - University of Iowa
Stephan Arndt - University of Iowa
Kristin Caspers - University of Iowa
Rebecca Yucuis - University of Iowa
Christopher J. Pfalzgraf - University of Iowa
Resource Type: Journal article
Publication Details: Journal of the International Neuropsychological Society, Vol.15(4), pp.590-596
DOI: 10.1017/S1355617709090766
PMID: 19573277
NLM abbreviation: J Int Neuropsychol Soc
ISSN: 1355-6177
eISSN: 1469-7661
Publisher: Cambridge Univ Press
Number of pages: 7
Grant note: R01DA005821 / NATIONAL INSTITUTE ON DRUG ABUSE; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Drug Abuse (NIDA); European Commission R01 DA005821 / NIDA NIH HHS; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Drug Abuse (NIDA)
Language: English
Date published: 07/01/2009
Academic Unit: Psychiatry; Epidemiology; Biostatistics; Nursing; Injury Prevention Research Center
Record Identifier: 9985132073402771

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