Measurement invariance of WISC-IV across normative and clinical samples

Discriminant Validity of the WISC-IV Culture-Language Interpretive Matrix

“…However, these are common characteristics of referred samples regardless of cultural and/or linguistic status (Canivez and Watkins 1998;Chen and Zhu 2012;Watkins and Smith 2013), which is evident in the descriptive statistics reported for the English-speaking samples in the present study as well. Statistically, significant mean score differences emerged between participant groups on some of the WISC-IV subtests, index scores, and the FSIQ score.…”

“…However, referred samples have different distributional characteristics than nonreferred samples (Canivez and Watkins 1998;Chen and Zhu 2012;Watkins and Smith 2013), and these results may not generalize to applied situations in which test scores are only examined by practitioners for individuals who were referred to them for evaluations. As a result, a secondary purpose of the present investigation is to determine the degree to which the C-LIM can distinguish between a referred sample of ELLs and a referred sample of English speakers.…”

The importance of measurement invariance in neurocognitive ability testing

“…With age-based norms, this might mean that two differently aged persons with the same level of cognitive functioning would obtain different IQ scores, raising the somewhat unorthodox question whether it always is sensible to actually use age-based norms. Wais-iV educational levels in spain partial Chen, Zhang, raiford, Zhu, and Weiss (2015) WisC-iV Males and females in the u.s. yes Chen and Zhu (2012) WiC-iV normative vs. clinical samples u.s. partial Dolan (2000) WisC-r Blacks and Whites in the u.s. yes Dolan, roorda, and Wicherts (2004) JaT south african ethnic groups no Dolan et al (2004) gaTB ethnic groups in the netherlands no Dolan et al (2006) Wais-iii Males vs. females in spain partial niileksela, reynolds, and Kaufman (2013) Wais-iV age groups in the u.s. partial Tommasi et al (2015) Wais-r educational levels in italy yes reynolds, ingram, seeley, and newby (2013) Wais-iV normal vs. intellectual disabilities u.s. partial raKiT ethnic groups in the netherlands no Wicherts et al (2004) Wais Cohorts in the netherlands no…”

“…Several studies showed that invariance does not always hold for these types of groupings in recent editions of Wechsler scales in the U.S. (Chen & Zhu, 2012;reynolds et al, 2013). For instance, reynolds et al (2013) found that several of the subtests of the WAIS-IV did not show measurement invariance when comparing normal samples to a sample with intellectual disabilities.…”

Assessing the accuracy of the WISC-IV seven-subtest short form and the child and adolescent intellectual disability screening questionnaire in identifying intellectual disability in children

“…The child version, the Wechsler Intelligence Scales for Children-Fourth Edition (WISC-IV: Wechsler, 2003) has undergone a number of validation tests in the general population (e.g. Chen & Zhu, 2008;Keith, Fine, Taub, Reynolds, & Kranzler, 2006) and in clinical or referred populations (Bodin, Pardini, Burns, & Stevens 2009;Chen & Zhu, 2012). There are, however, some limitations with the use of short forms of the Wechsler scales.…”