Dyadic Short Forms of the Wechsler Adult Intelligence Scale–III

Various short forms of the Wechsler Adult Intelligence Scale (WAIS)/WAIS-R have been developed to obtain estimates of overall intellectual level, although little research of WAIS-III short forms has been published to date. Full Scale IQ (FSIQ) estimates from four WAIS-III dyadic short forms were obtained by entering selected subtest scores from a mixed neurologic/psychiatric sample (n = 196) into regression equations. Results were cross validated on a second sample (n = 57). Within both samples, WAIS-III FSIQ scores were highly correlated (r = .90-.92, p < .001) with estimated FSIQ scores. Estimated FSIQ fell within 5 points of actual FSIQ in 49% to 74% of cross-validation cases and within 10 points of actual FSIQ in 81% to 93% of the sample. Comparable to findings from previous short-form investigations, actual and estimated FSIQ classification levels agreed in 46% to 67% of cases in the cross-validation sample. These dyadic WAIS-III forms appear appropriate for obtaining gross estimates of FSIQ in similar populations, although caution is recommended in interpreting estimated IQ scores.

[1]  R. B. Margolis,et al.  A cross-validation of two short forms of the WAIS-R in a geriatric sample suspected of dementia. , 1986, Journal of clinical psychology.

[2]  J. Sattler.  Assessment of Children: Cognitive Applications , 2001 .

[3]  R. Benedict,et al.  Concurrent Validity of Three WAIS-R Short Forms in Psychiatric Inpatients , 1992 .

[4]  B. Axelrod,et al.  Evaluation of seven-subtest short forms of the Wechsler Adult Intelligence Scale-III in a referred sample. , 2001, Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists.

[5]  W. Robiner,et al.  Abbreviated WAIS-R procedures: Use and limitations with head-injured patients , 1988 .

[6]  S. Lopez,et al.  Administration Time Estimates for WAIS-III Subtests, Scales, and Short Forms in a Clinical Sample , 1998 .

[7]  L. Ward,et al.  Subtest administration times and short forms of the Wechsler Adult Intelligence Scale‐Revised , 1987 .

[8]  M. Lezak.  Neuropsychological assessment, 3rd ed. , 1995 .

[9]  B. Brooker,et al.  Tables for clinicians to use to convert WAIS-R short forms , 1986 .

[10]  J. J. Ryan,et al.  Validity, reliability, and standard errors of measurement for two seven-subtest short forms of the Wechsler Adult Intelligence Scale—III. , 1999 .

[11]  J E DOPPELT,et al.  Estimating the full scale score on the Wechsler adult intelligence scale from scores on four subtests. , 1956, Journal of consulting psychology.

[12]  J. Crawford,et al.  Short-forms of the UK WAIS-R: regression equations and their predictive validity in a general population sample. , 1992, The British journal of clinical psychology.

[13]  B. Crosson,et al.  Investigation of validity of WAIS-R short forms for patients suspected to have brain impairment. , 1984, Journal of consulting and clinical psychology.

[14]  D. Wechsler.  Wechsler Adult Intelligence Scale , 2021, Encyclopedia of Evolutionary Psychological Science.

[15]  P. Satz,et al.  An abbreviation of the WAIS for clinical use. , 1962, Journal of clinical psychology.

[16]  K. S. Nelson,et al.  Cross-validation of six short forms of the WAIS-R in a healthy geriatric sample. , 1988, Journal of clinical psychology.

[17]  J. J. Ryan,et al.  Validity of two- and four-subtest short forms of the WAIS-R in psychiatric sample. , 1983, Journal of consulting and clinical psychology.

[18]  D. Boone.  Short forms of the WAIS-R with psychiatric inpatients: a comparison of techniques. , 1990, Journal of clinical psychology.

[19]  D. Tulsky,et al.  WAIS-III WMS-III Technical manual , 1977 .

[20]  A. Kaufman,et al.  Amazingly Short Forms of the WAIS-R , 1991 .

[21]  M. Leiker,et al.  A Comparison of Four WAIS-R Short Forms in Patients Referred for Psychological Neuropsychological Assessments , 1994 .

[22]  A. Thompson.  Methodological issues in the clinical evaluation of two- and four-subtest short forms of the WAIS-R. , 1987, Journal of clinical psychology.

[23]  L. Ward,et al.  Prediction of verbal, performance, and full scale IQs from seven subtests of the WAIS-R. , 1990, Journal of clinical psychology.

[24]  P. Levy,et al.  The correction for spurious correlation in the evaluation of short-form tests. , 1967, Journal of clinical psychology.

[25]  J. P. Haynes.  Comparative validity of two WAIS-R short forms with clients of low IQ. , 1985, Journal of clinical psychology.

[26]  P. Britton,et al.  A Short Form of the WAIS for use with the Aged , 1966, British Journal of Psychiatry.

[27]  A. Silverstein.  Two- and Four-Subtest Short Forms of the Wechsler Adult Intelligence Scale-Revised. , 1982 .