Factor Structure of Wechsler Preschool and Primary Scale of Intelligence (Third Edition) Spanish Version Scores among Children in Peru
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- Open Access.
- A critical component in the adaptation of measures across culturally different populations is the validation of the adapted measure for use in the new population. Validation requires evidence that the scores from the new tool measure the same qualities or aspects of the construct in the new population as they purport to measure in the original population. This study examined the reliability and validity of scores for an adapted version of the Spanish-language form of the Wechsler Preschool and Primary Scale of Intelligence-Third Edition (WPPSI-III-SP; Wechsler, 2009) as a measure of cognitive ability among a cohort of children in rural Peru. Using confirmatory factor analyses (CFA), a series of models were fit to data from a cohort of children age 36 months (n = 147) and the same cohort at age 48 months (n = 167). These models represented the theoretical factor structure established by the publisher for the normative data as well as models derived from other studies of cross-cultural intelligence test adaptation in the region. It was hypothesized that the models derived from prior South American studies would yield a better fit for the data as compared to the normative sample model. Convergent validity was also assessed based on the hypothesis that the scores from the adapted WPPSI-III-SP would be positively and strongly correlated with cognitive scores from a similarly adapted Bayley Scales of Infant and Toddler Development-Third Edition (Bayley-III; Bayley, 2005) administered with these children at age 24 months. CFA results support a one-factor model for both the 36- and 48-month time points for the adapted WPPSI-III-SP measure; however, evidence for convergent validity with prior estimates of cognitive ability using the adapted Bayley-III was minimal. Implications for cross-cultural test adaptation and the use of the adapted WPPSI-III-SP are discussed.
- Dissertation Note:
- Ph.D. Pennsylvania State University 2016.
- Reproduction Note:
- Microfilm (positive). 1 reel ; 35 mm. (University Microfilms 13819181)
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- The full text of the dissertation is available as an Adobe Acrobat .pdf file ; Adobe Acrobat Reader required to view the file.
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