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Confirmatory Factor Analysis of WAIS-IV in a Clinical Sample: Examining a Bi-Factor Model
Rachel Collinson1, Stephen Evans2, Miranda Wheeler3
1Neuropsychology Department, James Cook University Hospital, South Tees Hospitals NHS Foundation Trust, Middlesbrough TS4 3BW, UK. r.collinson@nhs.net.
Journal of Intelligence
|June 5, 2019
Summary
This study examined the factor structure of the Wechsler Adult Intelligence Scale IV (WAIS-IV) in a clinical neuropsychology sample. Results indicate the WAIS-IV is suitable for assessing intelligence in this population.
Area of Science:
- Neuropsychology
- Psychometrics
Background:
- The Wechsler Adult Intelligence Scale IV (WAIS-IV) is a widely used intelligence test.
- Previous research has focused on the WAIS-IV's factor structure using standardization samples.
Purpose of the Study:
- To investigate the factor structure of the WAIS-IV in a clinical neuropsychology sample.
- To determine the suitability of the WAIS-IV for use with diverse clinical populations.
Main Methods:
- Analysis of the WAIS-IV factor structure.
- Testing of correlated factor, higher-order, and bi-factor models.
- Utilizing a clinical neuropsychology sample of mixed aetiology.
Main Results:
- The factor structure of the WAIS-IV was successfully analyzed within the clinical sample.
- Correlated factor, higher-order, and bi-factor models were evaluated.
- The WAIS-IV demonstrated a suitable factor structure for this population.
Conclusions:
- The Wechsler Adult Intelligence Scale IV (WAIS-IV) is appropriate for use in clinical neuropsychology assessments.
- The findings support the generalizability of the WAIS-IV's structure across different populations.
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