“…The revisions were then documented DISCUSSION Several learning theories confirm the positive effects of WCF (see Gagne, 1985;Williams & Burden, 1997;Krashen, 2003;Brown, 2007). Moreover, a number of previous research studies have also indicated the importance and the effect of corrective feedback (Ashwell, 2000;Ellis et al, 2006;Hong, 2004;Carless, 2006;Sheen, 2007;Bitchener, 2008;Van Beuningen, 2010;Purnawarman, 2011;Ferris & Roberts, 2001;Ferris, Brown, Liu, & Stine, 2011;Ferris et al, 2013;Muth'im & Latief, 2014). This present study can then be considered as giving an additional support to these theories and the previous research studies.…”