“…Some studies targeted integrative settings, where children of different language abilities interact together (e.g. Beilinson & Olswang, 2003; Fujiki et al., 2001; Hadley & Rice, 1991; McCabe & Marshall, 2006; Schuele et al., 1995), and others focused on comparing groups of children with similar levels of language and communication (Henton, 1998; Horowitz et al., 2005, 2006, 2008). Guralnick and colleagues (Guralnick et al., 2006; Guralnick, Connor, et al., 1996; Guralnick, Gottman, et al., 1996; Guralnick & Hammond, 1999) conducted their research in both settings – mainstream or inclusive groups, as well as specialised groups of only children with similar developmental profiles.…”