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ERIC Number: EJ1197744
Record Type: Journal
Publication Date: 2018
Pages: 14
Abstractor: As Provided
ISSN: ISSN-2168-3603
Reliability and Factorial Validity of the Canadian Wechsler Intelligence Scale for Children--Fifth Edition
Watkins, Marley W.; Dombrowski, Stefan C.; Canivez, Gary L.
International Journal of School & Educational Psychology, v6 n4 p252-265 2018
The reliability and factorial validity of the Wechsler Intelligence Scale for Children--Fifth Edition: Canadian (WISC-V[superscript CDN]) was investigated. The higher-order model preferred by Wechsler (2014b) contained five group factors but lacked discriminant validity. An alternative bifactor model with four group factors and one general factor, akin to the traditional Wechsler model, exhibited the best global fit. The general factor accounted for 33.8% of the total variance and 67.6% of the common variance, but none of the group factors accounted for substantial portions of variance. All together, the general and group factors accounted for 50% of the total variance. Omega reliability coefficients demonstrated that reliable variance of WISC-V[superscript CDN] factor index scores was primarily due to the general factor, not the group factors. It was concluded that the cumulative weight of reliability and validity evidence suggests that psychologists should focus their interpretive efforts at the general factor level and exercise extreme caution when using group factor scores to make decisions about individuals.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Canada
Identifiers - Assessments and Surveys: Wechsler Intelligence Scale for Children