“…Understanding why and how an SEA is effective is crucial for the further development and success of the tool. The search for factors important for SEA effectiveness is an important theme within SEA literature (see Arbter, 2003;Aschemann, 2004;Dalal-Clayton and Sadler, 2008;Fischer and Gazzola, 2006;Hildén et al, 2004;MEGJ/ MIRI, 2003;Partidário, 1999;Retief, 2006;Runhaar, 2009;Runhaar and Driessen, 2007;Runhaar and van Nieuwaal, 2010;Sadler and Verheem, 1996;Sheate et al, 2001;Ten Heuvelhof and Nauta, 1996;Thérivel and Minas, 2002). Nevertheless, more must be learned about the factors that contribute to SEA effectiveness (Runhaar and Driessen, 2007).…”