Test‐retest stability of the WAIS‐R in a clinical sample

Ryan, Joseph J.; Georgemiller, Randy; Geisser, Michael E.; Randall, David M.

doi:10.1002/1097-4679(198507)41:4<552::aid-jclp2270410418>3.0.co;2-#

Cited by 8 publications

(8 citation statements)

References 5 publications

(4 reference statements)

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“…Overall, the results we report in this study are compatible with previous research and clinical knowledge. Consistent with results reported by Ryan et al (1985), this study, using a headinjured sample, finds highly significant test-retest stability coefficients that approach those found in Wechsler's (1981) normal sample. However, as was also apparent in the study by Ryan et al (1985), gains or losses for individual subjects are comparatively large.…”

Section: Resultssupporting

confidence: 89%

“…Consistent with results reported by Ryan et al (1985), this study, using a headinjured sample, finds highly significant test-retest stability coefficients that approach those found in Wechsler's (1981) normal sample. However, as was also apparent in the study by Ryan et al (1985), gains or losses for individual subjects are comparatively large. The finding that Digit Symbol subscale scores are the lowest of the subscales, both on test and retest, is consistent with clinical knowledge that suggests that this subscale is among the most sensitive to brain damage (Peck, Stephans, & Martelli, 1987).…”

Section: Resultssupporting

confidence: 89%

“…Similar results for the complete WAIS–R standardization sample were presented by Matarazzo and Herman (1984). Ryan, Georgemiller, Geisser, and Randall (1985) reported test–retest stability coefficients in a heterogeneous mix of 21 clinical patients (mean age = 37.38) from a Veterans Administration Medical Center. With a mean test–retest interval of 38 weeks (approximately 9 months), Ryan et al reported stability coefficients of .79, .88, and .86 for Verbal, Performance, and Full-Scale IQ, respectively.…”

supporting

confidence: 69%

“…Similar results for the complete WAIS-R standardization sample were presented by Matarazzo and Herman (1984). Ryan, Georgemiller, Geisser, and Randall (1985) Although the data provided by Wechsler (1981) and Ryan et al (1985) are important, neither study focuses specifically on ' Fifty-five degrees of freedom were used in this t test. All significance levels the stability of WAIS-R results in the head-injured patient, a population for which the WAIS-R is routinely used.…”

supporting

confidence: 54%

“…Important differences are apparent when comparing the present results to Ryan et al's (1985) more general norms. It appears that larger test–retest changes in both WAIS–R IQs and subscale scores occur in head-injured patients than in certain other clinical populations.…”

Section: Resultsmentioning

confidence: 56%

See 4 more Smart Citations

Test-retest stability of the Wechsler Adult Intelligence Scale—Revised in the assessment of head-injured patients.

Moore¹,

Stambrook²,

Hawryluk³

et al. 1990

Psychological Assessment: A Journal of Consulting and Clinical

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Wechsler Adult Intelligence Scale-Revised protocols from 48 male and 12 female head-injured patients (mean age = 27.02) with a mean test-retest interval of 8.48 months were analyzed to determine test-retest stability. Stability coefficients were .91, .84, and .92 for Verbal Intelligence Quotient (VIQ), Performance Intelligence Quotient (PIQ), and Full-Scale Intelligence Quotient (FSIQ), respectively. On retest, mean improvement was 4.08, 8.02, and 5.92 points for VIQ, PIQ, and FSIQ, respectively. Improvements were positively correlated with years of education and tended to correlate negatively with the number of months postinjury. Subscale stability coefficients ranged from .92 for Information to .61 for Digit Span.

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Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 89%

supporting

confidence: 69%

supporting

confidence: 54%

Section: Resultsmentioning

confidence: 56%

See 3 more Smart Citations

Test-retest stability of the Wechsler Adult Intelligence Scale—Revised in the assessment of head-injured patients.

Moore¹,

Stambrook²,

Hawryluk³

et al. 1990

Psychological Assessment: A Journal of Consulting and Clinical

View full text Add to dashboard Cite

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The stability of WAIS-R IQ for 16-year-old students retested after 3 and 8 months

Thompson

Molly

1993

J. Clin. Psychol.

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The stability of Wechsler Adult Intelligence Scale‐Revised IQs was investigated for 52 students 16 years of age. Half of the subjects were retested after a 3‐month interval; half after an 18‐month interval. Stability coefficients were uniformly high for both retest intervals. Gains in Verbal, Performance, and Full Scale IQ over 3 months were similar to practice effects reported for adult subjects. However, IQs for males retested after 18 months increased beyond the practice effect. Females retested after 18 months showed the same result only on Verbal IQ. The findings remind clinicians of the important distinction between relative and absolute stability, especially for 16‐year‐old students tested with the WAIS‐R.

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