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Direct linkDolan, Conor V.; Roorda, Willemijn; Wicherts, Jelte M. – Intelligence, 2004
Spearman's hypothesis states that the differences between Blacks and Whites in psychometric IQ are attributable to a fundamental difference in general intelligence ("g"). To investigate this hypothesis, Jensen devised the method of correlated vectors. This method involves calculating the correlation between the factor loadings of the…
Descriptors: Psychometrics, Intelligence Quotient, Intelligence Differences, Hypothesis Testing
Cutting, Laurie E.; Scarborough, Hollis S. – Scientific Studies of Reading, 2006
Reading comprehension scores from the Wechsler Individual Achievement Tests, the Gates-MacGinitie Reading Test, and the Gray Oral Reading Test were examined in relation to measures of reading, language, and other cognitive skills that have been hypothesized to contribute to comprehension and account for comprehension differences. In a sample of 97…
Descriptors: Reading Comprehension, Word Recognition, Language Proficiency, Thinking Skills
Peer reviewedHumphreys, Lloyd G. – Intelligence, 1985
This author reviews published data and presents new data relevant to the Spearman hypothesis concerning racial differences on cognitive tests. He concludes that across-the-board difference between SES groups occurs primarily on the general factor, and that there are major determinants of race differences independent of the general factor.…
Descriptors: Blacks, Cognitive Ability, Cognitive Measurement, Cognitive Tests
