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The intelligence of American children is still rising

Published online by Cambridge University Press:  31 July 2008

Richard Lynn
Affiliation:
University of Ulster, Coleraine, Northern Ireland
Claudia Pagliari
Affiliation:
University of Buckingham, England

Summary

Children's intelligence increased in the United States by approxi-mately 3 IQ points per decade over the period 1932–78. New evidence shows that these increases have been sustained during the last 20 years. Two recent studies indicate that the rates of increase for 1972–89 and 1978–89 were 3·3 and 3·5 IQ points per decade respectively.

Type
Research Article
Copyright
Copyright © 1994, Cambridge University Press

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References

Flynn, J. R. (1984) The mean IQ of Americans: massive gains 1932 to 1978. Psychol. Bull. 45,29.CrossRefGoogle Scholar
Flynn, J. R. (1987) Massive IQ gains in 14 nations: what IQ tests really measure. Psychol. Bull. 101, 171.CrossRefGoogle Scholar
Lynn, R. (1990) The role of nutrition in secular increases in intelligence. Personal, individ. Differences, 11, 273.CrossRefGoogle Scholar
Lynn, R. & Hampson, S. L. (1986) The rise of national intelligence: evidence from Britain, Japan and the United States. Personal, individ. Differences, 7, 23.CrossRefGoogle Scholar
Retherford, R. D. & Sewell, W. H. (1988) Intelligence and family size reconsidered. Social Biol. 35, 1.Google ScholarPubMed
Schoenthaler, S. J.Amos, S. P., Eysenck, H. J., Peritz, E. & Yudkjn, J. (1991) Controlled trial of vitamin–mineral supplementation: effects on intelligence and performance. Personal. individ. Differences, 12, 351.CrossRefGoogle Scholar
Van Court, M. & Bean, F. D. (1985) Intelligence and fertility in the United States, 1912–1982. Intelligence, 9, 23.CrossRefGoogle ScholarPubMed
Wechsler, D. (1992) Manual for the WISC III. Psychological Corporation, New York.Google Scholar