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Four-Subtest Index-based Short Form of WAIS-IV: Psychometric Properties and Clinical Utility. | LitMetric

AI Article Synopsis

  • The study evaluates the psychometric properties of a short form of the Wechsler Adult Intelligence Scale (WAIS-IV) called SF4, specifically its effectiveness in clinical settings in China.
  • A sample of 1,757 adults and 239 clinical patients demonstrated strong reliability and correlation results for the SF4, making it a useful tool for quick intelligence assessments.
  • The study also found a significant interaction between gender and IQ levels, suggesting that SF4 may underestimate intelligence in females with high IQ scores compared to males, highlighting the need for careful interpretation in clinical use.

Article 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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Source
http://dx.doi.org/10.1093/arclin/acy016DOI Listing

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