Does IQ predict job performance?

IQ correlates moderately (r=0.25-0.45) with job performance, with higher correlations for complex, knowledge-intensive roles.

Which jobs show stronger IQ-performance links?

Complex roles (scientist, engineer, manager) show stronger IQ-performance correlations; routine jobs show weaker correlations.

Personality, motivation, experience, emotional intelligence, and organizational fit often predict job success as well or better than IQ alone.

Yes. High IQ without motivation, discipline, or interpersonal skills often leads to mediocre career outcomes.

Peter Kolomiets

|April 2, 2026|Updated Apr 13, 2026|7 min read

Ready to discover your Iq Test?

Schmidt, F. L. & Hunter, J. E.. Schmidt, F. L. & Hunter, J. E. (1998). The Validity and Utility of Selection Methods in Personnel Psychology
Judge, T. A., et al.. Judge, T. A., Jackson, C. L., Shaw, J. C., Scott, B. A., & Rich, B. L. (2007). Self-Efficacy and Work Performance
Jensen, A. R.. Jensen, A. R. (1998). The g Factor: The Science of Mental Ability

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IQ measures reasoning and logic; emotional intelligence (EI) measures self-awareness and relationship skills. Both predict success differently.

IQ correlates moderately-to-strongly with school grades and standardized test scores, explaining 25-50% of academic performance variance.

Peter Kolomiets

|April 2, 2026|Updated Apr 13, 2026|7 min read

Ready to discover your Iq Test?

Schmidt, F. L. & Hunter, J. E.. Schmidt, F. L. & Hunter, J. E. (1998). The Validity and Utility of Selection Methods in Personnel Psychology
Judge, T. A., et al.. Judge, T. A., Jackson, C. L., Shaw, J. C., Scott, B. A., & Rich, B. L. (2007). Self-Efficacy and Work Performance
Jensen, A. R.. Jensen, A. R. (1998). The g Factor: The Science of Mental Ability