Nowicka, Agnieszka2012-03-262012-03-262001Glottodidactica, Vol. 29, 2001, s. 85-10383-232-1329-10072-4769http://hdl.handle.net/10593/2341The first part of the paper deals with characteristics of classroom interaction as a type of institutional talk in a conversational analytic perspective. Next, the thesis is discussed concerning developing learners' interactional competence to foster learner discursive independence in argumentative discussions in English as a foreign language. Finally, after a short review of dialogic signals, the article presents a preliminary analysis of selected dialogic signals: evaluating reformulations and piggybacking as the ways of achieving reciprocity in argumentative discussions.endialogic signalsargumentative discussionsPolish learners of EnglishArtykuł