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  • Title: Four-Subtest Index-based Short Form of WAIS-IV: Psychometric Properties and Clinical Utility.
    Author: Fan HZ, Zhu JJ, Wang J, Cui JF, Chen N, Yao J, Tan SP, Duan JH, Pang HT, Zou YZ.
    Journal: Arch Clin Neuropsychol; 2019 Feb 01; 34(1):81-88. PubMed ID: 29608636.
    Abstract:
    Short form of the Wechsler Adult Intelligence Scale is often needed to quickly estimate intelligence for time-saving or screening in clinical practice. The present study aims to examine the psychometric properties of Chinese version of the four-subtest index-based short form (SF4) of WAIS-IV (FS) and to confirm its clinical application. 1,757 adults from the WAIS-IV Chinese version standardization sample and 239 mixed clinical samples including patients with schizophrenia or schizoaffective disorder (SCH), obsessive-compulsive disorder (OCD), and mild or moderate intellectual disability (ID) were used. Demographic data were collected and intelligence was assessed with WAIS-IV. The SF4 split-half reliability, test-retest stability coefficients and corrected SF4-FS correlations were good to excellent. The result of the Bland-Altman plot showed that the difference fell within 2SD was 95% and indicated a random error. The sensitivity, specificity positive predictive value (PPV), and negative predictive value (NPV) of the stepwise screening were good. There was an interaction (p < .001) between the IQ level (≥111) and gender on the accuracy of SF4, SF4 might get underestimated on females with the IQ level (≥111) than on males. In conclusion, SF4 is a valid and reliable instrument for use in the clinic, and its clinical application, stepwise screening and influencing factors in clinical use are discussed herein.
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