Measurements of language learning aptitude are used in many different ways. The United States Department of Defense uses a measurement of language learning aptitude, the Defense Language Aptitude Battery, to help place employees in positions that require them to learn a new language.
Governmental agencies use the MLAT as a tool to select and place employees in intensive language training programs. Businesses and missionaries use the MLAT to select, place and plan for language training. Universities, colleges and high schools use the MLAT to help in the diagnosis of foreign language learning disabilities. Although each institution has its own policy, many will waive a foreign language requirement in cases of a foreign language learning disability in favor of a history or linguistic course.
Schools use the PLAB and MLAT-E to place students in suitable language courses, build a history of a foreign language learning difficulty, identify especially gifted students in respect to language learning and to match learning styles with instructional styles.