Lecture 4 PSYA02 Notes - Lecture 4 PSYA02 Notes Spearmans...

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Lecture 4 PSYA02 Notes Spearman’s Two Factor Theory Spearman found that many tests of intellectual ability were moderately and positively correlated, leading him to conclude that every intellectual activity involves both: o A general factor ( g )—common across all tests; how smart you are on average. It is broken down into subcategories: apprehension of experience eduction of relations (ability to see links) eduction of correlates (ability to apply rules) o A specific factor ( s ) —unique to each test o How to Identify General Intellectual Abilities: One way is to correlate intelligence tests; if correlation is 1, then we can conclude on general ability when doing tests. This is only useful if you are comparing two tests. What about more than two tests? Spearman developed the factor analysis: a statistical procedure for data reduction. Cattell’s Two Factor Theory o Fluid intelligence (g f ): The person’s native intellectual ability; his or her
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  • Winter '09
  • Joordens
  • IQ scores, factor theory, intellectual ability, native intellectual ability

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