The intelligence of American children is still rising.
Children's intelligence increased in the United States by approximately 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.
Lynn
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University of Ulster, Coleraine, Northern Ireland.
Pagliari
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D000293:Adolescent; D002648:Child; D002664:Child Nutritional Physiological Phenomena; D003071:Cognition; D004777:Environment; D005298:Fertility; D005544:Forecasting; D006801:Humans; D007360:Intelligence / Q000235:genetics; D007361:Intelligence Tests; D011597:Psychomotor Performance; D014481:United States; D014705:Verbal Behavior