“…Empirical research into professional reflective learning has indeed shown the positive effect of conditions such as goal interdependence and a shared vision building transformational leader (Geijsel, Sleegers, Stoel, & Kruger, 2009;Runhaar, Sanders, & Yang, 2010;Thoonen, Sleegers, Oort, Peetsma, & Geijsel, 2011;Tjosvold, Tang, & West, 2004;Tjosvold, Yu, & Hui, 2004;Wahlstrom & Louis, 2008;Wiley, 2001). Additionally, research on teacher information sharing and how teachers make use of their leader and workplace conditions for purposeful peer interaction and support (e.g., Edmundson Dillan & Roloff 2007;Geijsel et al, 2009;Leithwood, Jantzi, & Mascall, 2002;Nissilä, 2005;Tjosvold, 1986), found that a shared vision and transformational leadership have initiating roles, and that goal interdependence serves as a mediator (e.g., Sun and Leithwood, 2012;Wong, Tjosvold, & Liu, 2009). These antecedents do not need to be implemented, but can be discovered as naturally occurring resources of the workplace (Horn & Little, 2010;Spillane, Reiser, & Reimer, 2002).…”