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American IQ Gains from 1932 to 2002: The WISC Subtests and Educational Progress
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Flynn, James R.; Weiss, Lawrence G. – International Journal of Testing, 2007
Recent data from 12 pairs of tests representing eight standardization samples show that American IQ gains have occurred at a rate of 0.308 points per year from 1972 to 2002. Linked with earlier IQ gains, Americans have gained about 22 points over the 70 years between 1932 and 2002. Comparing the new WISC-IV (2002) and the old WISC-III (1989) shows…
Descriptors: Intelligence Quotient, Intelligence Tests, Standardized Tests, Aptitude