What is applied Linguistics ?
"Applied linguistics' is using what we know about (a) language, (b) how it is learned and (c) how it is used, in order to achieve some purpose or solve some problem in the real world. Those purposes are many and varied, as is evident in a definition given by Wilkins (1999: 7):
In a broad sense, applied linguistics is concerned with increasing understanding of the role of language in human affairs and thereby with providing the knowledge necessary for those who are responsible for taking language related decisions whether the need for these arises in the classroom, the workplace, the law court, or the laboratory.
Source : An Introduction to Applied Linguistics , second Edition .
Edited by Norbert Schmitt.