The objective of the paper is to illuminate the interpretation of the term „Applied Linguistics” in Latvia and abroad (in Western Europe, the USA and Russia), and thereby identifying possibilities and grounds for the research of Latvian as a second language in the context of the development of applied linguistics in Latvia. Apart from theoretical literature, the author also uses data from observations of classroom discussions, which were obtained in three secondary schools and one elementary school (two schools in Rezekne, one in Rezekne region and one in Balvi). The author of the paper conducted a discourse research of Grade 9 pupils who learn Latvian as a second language (LAT 2). These research data are also important for problems of the ...