Enduring the tests of age and time: Wechsler constructs across versions and revisions

Christopher R. Niileksela and Matthew R. Reynolds

Intelligence, 2019, vol. 77, issue C

Abstract: The Wechsler scales are some of the most commonly used intelligence tests in research and practice. It is unknown whether different versions (i.e., WPPSI, WISC, and WAIS) or revisions (e.g., WISC-IV and WISC-V) of the Wechsler scales measure the same constructs. We tested the factorial invariance across six Wechsler scales (WPPSI-III, WPPSI-IV, WISC-IV, WISC-V, WAIS-III, and WAIS-IV) to investigate whether the constructs measured across these scales are the same. Factorial invariance was tested using four- and five-factor measurement and higher-order models. Results suggested that the constructs measured by the Wechsler scales are generally the same and remarkably consistent across different versions and revisions. Most instances of non-invariance were due to subtest unique variances. The constructs measured by different Wechsler batteries can likely be interpreted similarly.

Keywords: Wechsler; Factorial invariance; WPPSI; WISC; WAIS (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:eee:intell:v:77:y:2019:i:c:s0160289619301850

DOI: 10.1016/j.intell.2019.101403

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