Diversifying psychometric tools for intelligence assessment and screening in Latin America

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dc.contributor.author Duggan, Emily C.
dc.date.accessioned 2019-07-16T00:02:45Z
dc.date.copyright 2019 en_US
dc.date.issued 2019-07-15
dc.identifier.uri http://hdl.handle.net/1828/10972
dc.description.abstract Objective: Cultural neuropsychologists face barriers such as access to culturally appropriate psychometric instruments and norms. Further, three commonly encountered dilemmas in cultural neuropsychology include the following questions: (1) How do psychologists determine the best normative data to use for a given assessment scenario? (2) Do measures and models developed with North American samples also work in adaptations of instruments used with cross-cultural samples? (3) How can alternative and cost-effective measures be developed to meet the need for additional assessment tools? In response to these dilemmas, this dissertation consists of three papers aimed at developing Latinx and cultural neuropsychology psychometric resources for one of the most common cultural assessment scenarios: intelligence assessment amongst Spanish-speaking individuals using the Wechsler Adult Intelligence Scale – Fourth Edition (WAIS-IV). Chapter 1. A sample of 305 highly educated Colombian corporate executives completed the WAIS-IV. Data were scored using norms from Colombia, Chile, Mexico, Spain, United States, and Canada and scores were compared using ANOVA. Additionally, a comparative sociodemographic framework was established to contextualize our sample to the standardization samples and populations of the six countries. Chapter 2. Accumulating evidence indicates the original factor structures published in the Wechsler Intelligence Scales may not best describe the data captured by these tests, and instead supports a five factor Cattell-Horn-Carroll (CHC) model over a four factor Wechsler model, and a bifactor model over a higher-order model. Confirmatory factor analysis and structural equation modeling was used to evaluate factor structure of the Chilean-WAIS-IV (Wechsler, 2013) normative sample (ages 18-60; N=672) to better understand its psychometrics and to contribute to much needed cross-cultural study of alternative WAIS-IV factor models. Results marginally favored CHC and bifactor models but provided strong support for higher-order and Wechsler model variants as well, pointing to the need of further theoretical, methodological, clinical, and cross-cultural research. Chapter 3. The recent publication of the Chilean adaptation of the WAIS-IV has contributed to ongoing efforts to provide more psychometric instruments culturally appropriate for regions in South America. While not all assessment situations necessitate administration of the full WAIS and calculation of a full-scale intelligence quotient (FSIQ), there is virtually no published research on WAIS-IV short forms for estimating IQ in Latin America. This study used a rigorous series of methods (adapted from Smith et al., 2000) to develop robust estimated IQ short forms, aligned with Wechsler and CHC models, using the Chilean WAIS-IV standardization data (ages 18-90; N=887). Linear scaling was used to produce normative tables for the 28 best two-, three-, four-, and five subtest short forms of the Chilean WAIS-IV. Discussion. Together, the three papers of this dissertation provide psychometric guidance and resources not only for Latin American neuropsychologists in the area of intelligence assessment, but also more broadly for all cultural neuropsychology researchers and clinicians. en_US
dc.language English eng
dc.language.iso en en_US
dc.rights Available to the World Wide Web en_US
dc.subject intelligence en_US
dc.subject assessment en_US
dc.subject psychometrics en_US
dc.subject cultural psychology en_US
dc.subject cultural neuropsychology en_US
dc.subject norms en_US
dc.subject Latinx en_US
dc.subject Latino en_US
dc.subject Spanish en_US
dc.subject Latin America en_US
dc.subject Colombia en_US
dc.subject Chile en_US
dc.title Diversifying psychometric tools for intelligence assessment and screening in Latin America en_US
dc.type Thesis en_US
dc.contributor.supervisor Garcia-Barrera, Mauricio Alejandro
dc.degree.department Department of Psychology en_US
dc.degree.level Doctor of Philosophy Ph.D. en_US
dc.identifier.bibliographicCitation Duggan, E. C., Awakon, L. M., Loaiza, C. C., & Garcia-Barrera, M. A. (2018). Contributing towards a cultural neuropsychology assessment decision-making framework: Comparison of WAIS-IV norms from Colombia, Chile, Mexico, Spain, United States, and Canada. Archives of Clinical Neuropsychology, online first. doi:10.1093/arclin/acy074 en_US
dc.description.scholarlevel Graduate en_US
dc.description.embargo 2020-06-25

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