“…The past two decades have witnessed a burgeoning body of research on discourse markers (e.g., Antaki, 2002;Bolden, 2006;Clift, 2001;Condon, 2001;Gardner, 1997Gardner, , 2007Heritage, 1984;Hutchby, 2001;Jefferson, 1985Jefferson, , 1993Raymond, 2004;Schourup, 2001;Stivers, 2004;Tree and Schrock, 2002;Tyler, 1992;Waring, 2003). Despite the substantial number of empirical endeavors, there seems to be a lack of agreement on how discourse markers may be defined (Schiffrin, 2001).…”