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Direct linkKanaya, Tomoe; Ceci, Stephen J.; Scullin, Matthew H. – Intelligence, 2005
Age differences within the yo-yo trend in IQ, caused when aging norms that produce inflated scores are replaced with new norms, were examined using longitudinal WISC, WISC-R and WISC-III records of students tested for special education services from 10 school districts. Descriptive and individual growth modeling analyses revealed that while the…
Descriptors: Norms, Intelligence Quotient, Age Differences, Trend Analysis
