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Author: Reuter, Martin
Resulting in 2 citations.
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Hartmann, Peter Reuter, Martin |
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Spearman's "Law of Diminishing Returns" Tested with Two Methods Intelligence 34,1 (January-February 2006): 47-62. Also: http://www.sciencedirect.com/science/article/pii/S0160289605000632 Cohort(s): NLSY97 Publisher: Elsevier Keyword(s): Armed Services Vocational Aptitude Battery (ASVAB); Children; Computer Assisted Personal Interviewing (CAPI); g Factor; Test Scores/Test theory/IRT Spearman's "Law of Diminishing Returns" with regard to ability is tested in a dataset from the National Longitudinal Study of Youth. The dataset consisted of a sample of 6980 children aged 12–16 from the 1997 cohort. The subjects were tested with a computer administrated adaptive format of the Armed Services Vocational Aptitude Battery consisting of 12 subtests Spearman's "Law of Diminishing Returns" was tested by two methods both dividing the sample into Low/High ability based either on the total score on the test or on the score one of the 12 subtests. Subsequently the ability groups were factor analysed separately. The eigenvalue of the first principal component and the first principal axis factor, and the average inter-correlation of the subtests were used as estimates of the g saturation and compared across groups. The study could not confirm Spearman's "Law of Diminishing Returns" for any of the methods applied and did not find any relevant differences across methods applied. |
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Bibliography Citation
Hartmann, Peter and Martin Reuter. "Spearman's "Law of Diminishing Returns" Tested with Two Methods." Intelligence 34,1 (January-February 2006): 47-62.
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| 2. |
Hartmann, Peter Reuter, Martin Nyborg, Helmuth |
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The Relationship Between Date of Birth and Individual Differences in Personality and General Intelligence: A Large-scale Study Personality and Individual Differences 40,7 (May 2006): 1349-1362. Also: http://www.sciencedirect.com/science/article/pii/S0191886905004046 Cohort(s): NLSY79 Publisher: Elsevier Keyword(s): Armed Services Vocational Aptitude Battery (ASVAB); Birth Outcomes; g Factor; Intelligence; Seasonality We investigated the relationship between date of birth and individual differences in personality and intelligence in two large samples. The first sample consisted of 4000+ middle-aged male subjects from the Vietnam Experience Study; personality was measured by the MMPI items converted to EPQ (scales) and a large battery of cognitive tests were factored to derive general intelligence, g. The second sample consisted of 11,000+ young adults from the National Longitudinal Study of Youth from 1979. g was extracted from the ten subtests of the Armed Services Vocational Aptitude Battery. In no cases did date of birth relate to individual differences in personality or general intelligence. A further goal was to test Eysenck's notion of possible relationships between date of birth and the popular Sun Signs in astrology. No support could be found for such associations. We conclude that the present large-scale study provides no evidence for the existence of relevant relationships between date of birth and individual differences in personality and general intelligence. |
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Bibliography Citation
Hartmann, Peter, Martin Reuter and Helmuth Nyborg. "The Relationship Between Date of Birth and Individual Differences in Personality and General Intelligence: A Large-scale Study." Personality and Individual Differences 40,7 (May 2006): 1349-1362.
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