General mental ability in the world of work: occupational attainment and job performance.

@article{Schmidt2004GeneralMA,
  title={General mental ability in the world of work: occupational attainment and job performance.},
  author={Frank L. Schmidt and John Edward Hunter},
  journal={Journal of personality and social psychology},
  year={2004},
  volume={86 1},
  pages={
          162-73
        }
}
The psychological construct of general mental ability (GMA), introduced by C. Spearman (1904) nearly 100 years ago, has enjoyed a resurgence of interest and attention in recent decades. This article presents the research evidence that GMA predicts both occupational level attained and performance within one's chosen occupation and does so better than any other ability, trait, or disposition and better than job experience. The sizes of these relationships with GMA are also larger than most found… 

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