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E-ISSN : 2733-4538
In this study, a short form of the Korean-Wechsler Adult Intelligence Scale developed by Ward (K-WAIS/7 SF; 1990) was used to generate Verbal, Performance, and Full Scale IQ scores (VIQ, PIQ, and FSIQ, respectively) in 157 samples of mixed psychiatric patients. The relation between Ward's seven short-form VIQ, PIQ, and FSIQ scores and corresponding K-WAIS IQ scores were highly correlated with K-WAIS scores in Pearson correlation coefficient of .98, .93, and .98, respectively. Moreover, the mean error size associated with WAIS-R/7 SF FSIQ scores was significantly lower than the mean error size corresponding to predicted FSIQ scores based on Doppelt's(1956) short form. The short-form VIQ, PIQ, and FSIQ scores did not differed significantly from corresponding K-WAIS scores. K-WAIS/7 SF VIQ, PIQ, and FSIQ scores fell within 7, 10, and 7 absolute error points, respectively, of corresponding K-WAIS IQ scores in 95% of cases. Classification of IQ scores into ranges (e.g., average, high average, etc.) based on the scheme outlined by Wechsler (1981) was consistent between K-WAIS/7 SF and K-WAIS scores in 81% (for VIQ), 75% (for PIQ), and 82% (for FSIQ) of cases. this study demonstrated that the K-WAIS/7 SF exhibited superior accuracy and vality in th prediction of K-WAIS FIQ scores compared to Doppelt's four-subtest short forms. These findings are discussed within the context of using the K-WAIS/7 SF in the assessment of mixed psychiatric patients.
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