General cognitive ability is a strong predictor of job performance especially with regard to task performance.

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Studies have consistently shown that general cognitive ability, often measured as IQ or aptitude tests, is a strong predictor of job performance, particularly when it comes to task performance. Other factors that play a role in job performance include personality traits, social skills, and job-specific knowledge and skills, but general cognitive ability is consistently found to be a key predictor.

General Cognitive Ability Is a Strong Predictor of Job Performance