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Christensen, Bruce K.; Girard, Todd A.; Bagby, R. Michael – Psychological Assessment, 2007
An eight-subtest short form (SF8) of the Wechsler Adult Intelligence Scale, Third Edition (WAIS-III), maintaining equal representation of each index factor, was developed for use with psychiatric populations. Data were collected from a mixed inpatient/outpatient sample (99 men and 101 women) referred for neuropsychological assessment. Psychometric…
Descriptors: Psychometrics, Intelligence, Factor Structure, Intelligence Tests
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Bieber, Stephen L.; Meredith, William – Psychometrika, 1986
Meredith's method of extracting a factorially invariant solution is adapted to longitudinal settings. An explorational estimation procedure is presented which attempts to identify the longitudinal factor components of an across occasion variance-covariance matrix. Data from 166 subjects on the Wechsler Adult Intelligence Scale is used to…
Descriptors: Factor Analysis, Factor Structure, Intelligence Tests, Longitudinal Studies