Prorating IQ Scores for Older Adults: Validation of a Seven-Subtest WAIS-R with the Mayo Older Americans Normative Sample

Assessment ◽  
1996 ◽  
Vol 3 (4) ◽  
pp. 411-416 ◽  
Author(s):  
David Schretlen ◽  
Robert J. Ivnik
Keyword(s):  
Older Adults ◽  
Short Form ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Adult Intelligence Scale ◽  
Intelligence Scale ◽  
Older Americans ◽  
Wechsler Adult Intelligence Scale ◽  
Iq Scores ◽  
Wechsler Adult Intelligence

Concurrent validity of a seven-subtest short form (7SF) of the revised edition of the Wechsler Adult Intelligence Scale (WAIS-R) was examined in 733 cognitively normal adults between 56 and 99 years of age who participated in Mayo's Older Americans Normative Studies (MOANS). Pearson correlation coefficients between actual and prorated MAYO Verbal, Performance, and Full Scale IQ scores ranged from r =. 93 to r =. 97. Actual and prorated FSIQ scores differed by 6 points or less for 98% of participants, and the observed deviations did not vary as a function of age. These results support the use of this WAIS-R short form to prorate MAYO IQ scores for older adults.

Comparison of WAIS-R Selected Subtest Short Forms in a Mixed Clinical Population

Assessment ◽  
1997 ◽  
Vol 4 (4) ◽  
pp. 409-417 ◽  
Author(s):  
Elizabeth Abraham ◽  
Bradley N. Axelrod ◽  
Anthony M. Paolo
Keyword(s):  
Short Form ◽  
Clinical Sample ◽  
Correlation Coefficients ◽  
Clinical Population ◽  
Adult Intelligence Scale ◽  
Intelligence Scale ◽  
Wechsler Adult Intelligence Scale ◽  
Short Forms ◽  
Administration Time ◽  
Wechsler Adult Intelligence

Abbreviated forms of the revised edition of the Wechsler Adult Intelligence Scale (WAIS-R) attempt to shorten the administration time of the test without adversely affecting the results. Seven different short forms of the WAIS-R were compared in a mixed clinical sample to evaluate short form predictions of Full Scale IQ (FSIQ). Correlation coefficients for each short form indicate that Ward's seven-subtest short form predicts IQ scores most closely to FSIQ scores across ranges of intellectual functioning. In this sample, 96% of the patients obtained FSIQ scores within 5 points of their actual FSIQ when using this short form. Two tetrad short forms yielded scores that were close to actual FSIQ scores, however to a lesser degree. These results are consistent with other studies using Ward's seven-subtest short form, and, therefore, suggest that this particular version is a reliable and valid substitute for a full WAIS-R when time is limited.

Cognitive deficits in problematic drinkers with and without mild to borderline intellectual disability

2016 ◽  
Vol 22 (1) ◽  
pp. 5-17 ◽  
Author(s):  
Neomi van Duijvenbode ◽  
Robert Didden ◽  
Joanne EL VanDerNagel ◽  
Hubert PLM Korzilius ◽  
Rutger CME Engels
Keyword(s):  
Intellectual Disability ◽  
Alcohol Use ◽  
Cognitive Deficits ◽  
Alcohol Use Disorder ◽  
Short Form ◽  
Adult Intelligence Scale ◽  
Intelligence Scale ◽  
Wechsler Adult Intelligence Scale ◽  
Disorder Identification ◽  
Wechsler Adult Intelligence

We examined cognitive deficits in problematic drinkers with and without mild to borderline intellectual disability (MBID). Problematic drinkers were expected to show a significantly lower estimated performance IQ (PIQ), but not a lower estimated verbal IQ (VIQ), compared to light drinkers. Participants ( N = 474) were divided into four groups based on IQ and severity of alcohol use-related problems. IQ was estimated using (a short form of) the Wechsler Adult Intelligence Scale third edition. Severity of alcohol use-related problems was assessed using the Alcohol Use Disorder Identification Test. Overall, there were no significant differences between light and problematic drinkers on estimated VIQ. Within the group without MBID, estimated PIQ was significantly lower. Estimated PIQ was not lower in problematic drinkers with MBID compared to light drinkers with MBID. The results are indicative of cognitive deficits in problematic drinkers without MBID. Screening for cognitive deficits with additional instruments is advised.

More Practice Effect Tables for More Effective Practice: Practitioner's Guide to Evaluating Change with Intellectual Assessment Instruments, R.J. McCaffrey, K. Duff, and H.J. Westervelt (Eds.). 2001. New York: Kluwer Academic/Plenum. 280 pp., $69.95 (PB).

2002 ◽  
Vol 8 (6) ◽  
pp. 870-870
Author(s):  
Muriel D. Lezak
Keyword(s):  
New York ◽  
Practice Effect ◽  
Assessment Instruments ◽  
Adult Intelligence Scale ◽  
Intelligence Scale ◽  
Wechsler Adult Intelligence Scale ◽  
The North ◽  
Iq Scores ◽  
Raven's Progressive Matrices ◽  
Wechsler Adult Intelligence

Clinicians owe a debt of gratitude to McCaffrey and his team for developing not just one (McCaffrey et al., 2000) but now a second set of tables providing an extensive compilation of test–retest data for tests commonly used in neuropsychological assessment. The newest Practitioner's Guide presents the retest findings for all four versions of the adult Wechsler Intelligence Scale [Wechsler-Bellevue, the original Wechsler Adult Intelligence Scale (WAIS), and its variants: WAIS–R, WAIS–III, WAIS–RNI], plus the Wechsler Intelligence Scale for Children (WISC) with its variants (WISC–R, WISC–III) and the Wechsler Preschool and Primary Scale of Intelligence. For each of Wechsler's batteries this guide provides retest data for the scores in common use (e.g., IQ, VIQ, PIQ, each individual test, and WAIS–III index scores). In addition retest findings are given for the North American Reading Test, Raven's Progressive Matrices, Shipley-Hartford Institute of Living Scale, and for 13 Stanford-Binet studies (form L-M, judging from study dates; all but five are IQ scores).

Estimating Full Scale IQ While Minimizing the Effects of Practice

Assessment ◽  
1997 ◽  
Vol 4 (3) ◽  
pp. 221-227 ◽  
Author(s):  
Bradley N. Axelrod ◽  
Brooke Brines ◽  
Lisa J. Rapport
Keyword(s):  
Factor Score ◽  
Short Form ◽  
Full Scale ◽  
Adult Intelligence Scale ◽  
Intelligence Scale ◽  
Verbal Comprehension ◽  
Wechsler Adult Intelligence Scale ◽  
College Undergraduate ◽  
Wechsler Adult Intelligence ◽  
Repeat Assessment

The present study attempted to ascertain the best estimate of true Wechsler Adult Intelligence Scale-Revised (WAIS-R) Full Scale IQ (FSIQ) when confronted with an individual who recently had been administered the WAIS-R. Sixty-five college undergraduate participants were administered the WAIS-R twice within 14 days. WAIS-R summary scores, factor scores, and short-form estimates obtained from the second assessment were compared to FSIQ at the first evaluation. The results indicated that Verbal IQ, the Verbal Comprehension factor score, and subtracting 6 points from the current FSIQ are the least affected by repeat assessment and the most accurate estimates of FSIQ at the first evaluation. Use of these estimates of FSIQ are encouraged when evaluating an individual who has been administered the WAIS-R in the recent past.

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