Journal of Clinical Psychology · 1987 · 23 citations · 6 references
EducationEducational AssessmentEducational MeasurementClinical PsychologyIndividual DifferencesPsychometricsIntelligence AssessmentMental HealthPersonality AssessmentPsychological AssessmentPsychological TestingAdult Intelligence AssessmentCorrelationDevelopmental Assessment Of IntelligencePremorbid Intelligence EstimationPsychometric IntelligenceVerbal Intelligence Tests
The Shipley and WAIS-R were administered to a diverse psychiatric and neurologic sample of 186 males. Estimates of Full Scale WAIS-R IQ obtained from the Shipley regression equation of Zachary, Crumpton, and Spiegel (1985) yielded a correlation of .73 with WAIS-R IQ, considerably lower than the .85 and .87 reported by the authors. Development of a new regression equation with more variables did not yield a significantly higher correlation. Several individual subtests or pairs of subtests provided equal or better estimates of WAIS-R IQ within the same population and required less administration time. The Shipley is recommended as an adequate IQ estimate when individual testing is not feasible.
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