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Frazier, Thomas W.; Youngstrom, Eric A. – Intelligence, 2007
A historical increase in the number of factors purportedly measured by commercial tests of cognitive ability may result from four distinct pressures including: increasingly complex models of intelligence, test publishers' desires to provide clinically useful assessment instruments with greater interpretive value, test publishers' desires to…
Descriptors: Evaluation Criteria, Factor Structure, Cognitive Ability, Intelligence Tests