“…In short, a variety of CSCL scripts have been developed and analyzed in empirical studies (e.g., Demetriadis, Egerter, Hanisch, and Fischer 2011;Ertl, Fischer, and Mandl 2006;Gelmini-Hornsby, Ainsworth, and O'Malley 2011;Gijlers and de Jong 2009;Haake and Pfister 2010;Kollar, Fischer, and Slotta 2007;Noroozi, Teasley, Biemans, Weinberger, and Mulder 2013;Rummel, Mullins, and Spada 2012;Schellens, Van Keer, De Wever, and Valcke 2007;Stegmann et al 2007;Van Aalst and Chan 2007;Weinberger, Ertl, Fischer, and Mandl 2005). Yet, despite broad agreement concerning the high potential of CSCL scripts for enhancing collaborative learning, research about its effectiveness yielded mixed results (see Molinari, Sangin, Dillenbourg, and Nüssli 2009;Weinberger et al 2010).…”