The most widely used test for selecting candidates for admission to colleges and universities in the US. Its subtests include verbal and mathematical aptitude tests and an achievement test in each academic subject. It was introduced in schools in 1926 and was originally called the Scholastic Aptitude Test, but the Educational Testing Service changed its name in 1994 in response to criticisms of its accuracy at predicting academic performance. Compare American College Testing Program, Graduate Records Examination. SAT abbrev.