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the claim
IQ test scores measure general intelligence and predict academic achievement and job performance.
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CONTESTED PARTIAL
Recorded sources
6 sources for · 4 against
Is it true that IQ test scores measure general intelligence and predict academic achievement and job performance?
Partly. The retrieved studies partially support the claim: several find IQ or cognitive-test scores predict academic achievement in specific samples (chemistry exams, university GPA), and one review supports IQ tests as measures of general intelligence. But other items report weak or low predictive validity in particular groups, and no item addresses job performance at all.
Verdict: CONTESTED PARTIAL · 6 sources for, 4 against · Last checked
Evidence for · 6
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ACHIEVEMENT RELATIVE TO A MEASURE OF GENERAL INTELLIGENCE. (1979). doi.org. https://doi.org/10.1111/j.2044-8279.1979.tb02423.x
Evidence against · 4
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S., L. K., Darin, M. T., L., B. N., & M., M. C. (2002). Comparison of the General Ability Measure for Adults and the Kaufman Adolescent and Adult Intelligence Test with College Students.. eric.ed.gov. https://eric.ed.gov/?id=EJ651737
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More for · 5
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The Sternberg Triarchic Abilities Test (STAT) as a measure of academic achievement and general intelligence. (2003). doi.org. https://doi.org/10.1016/s0191-8869(03)00005-9
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S., C. J. & Others, A. (1977). A Comparison of the Predictive Validity of a Measure of General Intelligence and a Piaget-Derived Test Relative to an Achievement Examination in High School Chemistry. eric.ed.gov. https://eric.ed.gov/?id=EJ180486
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A Comparison of the Predictive Validity of a Measure of General Intelligence and a Piaget-Derived Test Relative to an Achievement Examination in High School Chemistry. (1977). doi.org. https://doi.org/10.1177/001316447703700423
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What No Child Left Behind Leaves Behind: The Roles of IQ and Self-Control in Predicting Standardized Achievement Test Scores and Report Card Grades - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1037/a0026280
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Richardson, M., Abraham, C., & Bond, R. (2012). Psychological correlates of university students' academic performance: a systematic review and meta-analysis.. doi.org. https://doi.org/10.1037/a0026838
More against · 3
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M., W. J., V., D. C., S., C. J., & J., v. d. M. H. L. (2010). Raven's Test Performance of Sub-Saharan Africans: Average Performance, Psychometric Properties, and the Flynn Effect. eric.ed.gov. https://doi.org/10.1016/j.lindif.2009.12.001
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L, S. & J, L. (2025). Non-Cognitive Predictors: Evidence and Implications for Academic Achievement and Cognitive Processing.. doi.org. https://doi.org/10.3390/jintelligence13100133
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Lenhard, A. & Daseking, M. (2022). Accounting for Intraindividual Profiles in the Wechsler Intelligence Scales Improves the Prediction of School Performance. doi.org. https://doi.org/10.3390/children9111635
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