ERIC Number: EJ746226
Record Type: Journal
Publication Date: 2006
Reference Count: N/A
State Preferences for the ACT versus SAT Complicates Inferences about SAT-Derived State IQ Estimates: A Comment on Kanazawa (2006)
McDaniel, Michael A.
Intelligence, v34 n6 p601-606 Nov-Dec 2006
Kanazawa [Kanazawa, S. (2006). IQ and the wealth of states. "Intelligence," 34, 593-600.] offered estimates of state IQ derived from SAT data. The purpose of this commentary is to argue that state preferences for the use of the ACT versus the SAT create biased estimates of SAT-derived state IQ for states where the ACT is more frequently used than the SAT. This error can be reduced by using both ACT and SAT data to estimate state IQ. An IQ estimate based on a ACT-SAT composite and a NAEP-derived state IQ estimate were compared as predictors of three wealth variables. Both IQ estimates cause one to conclude that states with higher mean IQ have larger gross state product per capita, higher median incomes, and a lower percentage of their population in poverty.
Descriptors: College Entrance Examinations, Aptitude Tests, Intelligence Quotient, Comparative Analysis, Predictor Variables
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Publication Type: Journal Articles; Opinion Papers
Education Level: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: ACT Assessment; SAT (College Admission Test)