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Peer reviewedMacmann, Gregg M.; Barnett, David W. – School Psychology Quarterly, 1994
Describes exploratory and confirmatory analyses of verbal-performance procedures to illustrate concepts and procedures for analysis of correlated factors. Argues that, based on convergent and discriminant validity criteria, factors should have higher correlations with variables that they purport to measure than with other variables. Discusses…
Descriptors: Adolescents, Adults, Children, Correlation
Horn, John L. – 1979
A brief discussion of theories of general intelligence precedes a report of relevant empirical data. Results from the factor analysis of more than 20 sets of Wechsler Adult Intelligence Scale (WAIS) data indicate that the WAIS clearly is not a one-factor scale. It does not measure a single, general intelligence. Roughly 17 percent of the reliable…
Descriptors: Factor Analysis, Intellectual Development, Intelligence, Intelligence Quotient
Peer reviewedMacCluskie, K. C.; Tunick, R. H.; Dial, J. G.; Paul, D. S. – Journal of Visual Impairment & Blindness, 1998
The Wechsler Adult Intelligence Scale-Revised (WAIS-R) and the Cognitive Test for the Blind were used to compare verbal and nonverbal abstraction ability of adults who became blind before age 2 or after age 5 (when expressive language would have been developed). No significant differences were found, but variability of scores on the WAIS-R…
Descriptors: Abstract Reasoning, Adventitious Impairments, Blindness, Cognitive Development
