THE EFFECT OF PERFORMANCE TIME AND RETESTING UPON THE FACTOR STRUCTURE OF INTELLIGENCE TESTS |
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| Authors: | Sauli Hä kkinen,Isto Ruoppila |
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| Affiliation: | Psychological Department, Institute of Occupational Health, Helsinki, Finland |
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| Abstract: | Changes in the factor structure of intelligence tests between early and later stages of performance and between testing and retesting were studied. In addition to factor analyses, correlations between the test scores of various time periods and the final factor scores were computed. The principal findings were the powerful influence of the verbal ability in the initial stages of most tests, the gradual 'purification' of the factors, and the occurrence of a shift of the highest factor loadings of some tests from one factor to another, particularly in tests with increasing item difficulty. |
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