Aptitude and
IQ are different but related concepts relating to human mental ability. Unlike the original idea of IQ, aptitude often refers to one of the many different characteristics which can be independent of each other, such as aptitude for military flight, air traffic control, or computer programming. This approach measures a variety of separate skills, similar to the
theory of multiple intelligences and
Cattell–Horn–Carroll theory and many other modern theories of intelligence. In general, aptitude tests are more likely to be designed and used for career and employment decisions, and intelligence tests are more likely to be used for educational and research purposes. However, there is a great deal of overlap between them, and they often measure the same kinds of abilities. For example, aptitude tests such as the
Armed Services Vocational Aptitude Battery measure enough aptitudes that they could also serve as a measure of general intelligence. A single construct such as mental ability is measured with multiple tests. Often, a person's group of test scores will be highly correlated with each other, which makes a single measure useful in many cases. For example, the
U.S. Department of Labor's
General Learning Ability is determined by combining Verbal, Numerical and Spatial aptitude scores. However, many individuals have skills that are much higher or lower than their overall mental ability level. Aptitude subtests are used intra-individually to determine which tasks that individual is more skilled at performing. This information can be useful for determining which job roles are the best fits for employees or applicants. Often, before more rigorous aptitude tests are used, individuals are screened for a basic level of aptitude through a previously completed process, such as
SAT scores,
GRE scores,
GATE scores, degrees, or other certifications. == Common aptitude tests ==