“…The procedure has been employed in 19 studies with a total of 48 participants with 12 13 moderate intellectual disabilities (MoID) (Alberto et al, in press;Batu, 2008;Birkan, 2005;Dogan & Tekin-Iftar, 2002;Fickel et al, 1992;Gursel et al, 2006;Maciag et al, 2000;Parker & Schuster, 2002;Parrott et al, 2000;Rao & Mallow, 2009;Riesen et al, 2003;Schuster & Griffen, 1993;Schuster et al, 1992;Singleton et al, 1995;Singleton et al, 1999;Tekin & Kircaali-Iftar;Tekin-Iftar, 2008;Waugh et al, 2009). The procedure also has been employed in 12 studies with a total of 21 participants with mild intellectual disabilities (MID) (Birkan, 2005;Dogan & Tekin-Iftar, 2002;Fickel et al, 1992;Gursel et al, 2006;Johnson et al, 1996;Palmer et al,1999;Parker & Schuster, 2002;Rao & Kane, 2009;Rao & Mallow, 2009;Riesen et al, 2003;Tekin & Kircaali-Iftar, 2002;Tekin-Iftar et al, 2003), 6 studies with a total of 17 participants with autism (Akmanoglu & Batu, 2004;Akmanoglu-Uludag & Batu, 2005;Colozzi et al, 2008;Riesen et al, 2003;Tekin-Iftar, 2008), 5 studies with a total of 10 participants with typical development (Fickel et al, 1992;…”