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Describe the main differences between Spearman and Thurstone's theories of intelligence. How do the hierarchical theories attempt to "bridge the gap" between these two theories?

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This solution thoroughly exemplifies Spearman and Thurstone's Theories. References are also provided to justify the assertions.

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1. Describe the main differences between Spearman and Thurstone's theories of intelligence.

Charles Spearman (1863-1945) proposed a theory of general intelligence, or the g factor. To collect data in theory development, he used factor analysis to examine a number of mental aptitude tests. Spearman made the conclusion that scores on these tests were very similar because the scores on one cognitive ...

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