[3] As a concept with historical origins in education and psychology, its application in applied linguistics will constantly be influenced by the latest findings in those disciplines of study.
In other words, contemporary discussions of foreign language aptitude in applied linguistics would be substantially insufficient if not for research advances in other fields.
[5] John B. Carroll, an influential psychologist in the field of educational linguistics, developed a theory about a cluster of four abilities that factored into language learning aptitude, separate from verbal intelligence and motivation.
Pimsleur included grade point average as an indication of general academic achievement as well as motivation in his factors.
Governmental agencies use the MLAT as a tool to select and place employees in intensive language training programs.