What question did this study set out to answer?

This study aims to evaluate the roles of general mental ability, experience, and deliberate practice in predicting job performance.

August 6, 2026Open Access

Intelligence, Experience, and Deliberate Practice in Personnel Selection - An Integrative Meta-Analytic Review and Computational Simulation

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Integrative review evaluates performance predictors in occupational settings, highlighting GMA's importance.

This study aims to evaluate the roles of general mental ability, experience, and deliberate practice in predicting job performance.
Conducted an integrative review and computational simulation based on a century of research in Industrial and Organizational Psychology.
Analyzed meta-analytic data and dynamic mathematical modeling to assess the predictors of performance across 50 occupational categories.
Critically examined the validity of the 10,000-hour rule in relation to deliberate practice and cognitive capacity.
General Mental Ability (GMA) is identified as the most robust predictor of performance, even after correcting for statistical artifacts.
Deliberate practice accounts for only 30-34% of the variance in elite expertise.
The study introduces a model to quantify IQ thresholds needed to address experience deficits across various jobs.

Emre Karadaş (2026) studied this question.

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