Thousands of studies provide evidence that tests of general mental ability (GMA) predict successful job performance across a wide variety of jobs and situations (e.g. Schmidt & Hunter, 2004; Schmidt & Hunter, 1998; Gottfredson, 1997; Hunter & Hunter, 1984). In fact, studies indicate that there is no predictor of job performance that is comparable in validity to measures of general mental ability.
Cognitive Abilities, factor « g »
Individual or in Group