The g-factor of international cognitive ability comparisons: the homogeneity of results in PISA, TIMSS, PIRLS and IQ-tests across nations
Article first published online: 8 AUG 2007
Copyright © 2007 John Wiley & Sons, Ltd.
European Journal of Personality
Special Issue: European Personality Reviews 2007
Volume 21, Issue 5, pages 667–706, August 2007
How to Cite
Rindermann, H. (2007), The g-factor of international cognitive ability comparisons: the homogeneity of results in PISA, TIMSS, PIRLS and IQ-tests across nations. Eur. J. Pers., 21: 667–706. doi: 10.1002/per.634
- Issue published online: 8 AUG 2007
- Article first published online: 8 AUG 2007
- Manuscript Revised: 13 FEB 2007
- Manuscript Accepted: 13 FEB 2007
- Manuscript Received: 29 NOV 2006
- student assessment;
- educational achievement;
International cognitive ability and achievement comparisons stem from different research traditions. But analyses at the interindividual data level show that they share a common positive manifold. Correlations of national ability means are even higher to very high (within student assessment studies, r = .60–.98; between different student assessment studies [PISA-sum with TIMSS-sum] r = .82–.83; student assessment sum with intelligence tests, r = .85–.86). Results of factor analyses indicate a strong g-factor of differences between nations (variance explained by the first unrotated factor: 94–95%). Causes of the high correlations are seen in the similarities of tests within studies, in the similarities of the cognitive demands for tasks from different tests, and in the common developmental factors at the individual and national levels including known environmental and unknown genetic influences. Copyright © 2007 John Wiley & Sons, Ltd.