... Educational research suggests that teacher mastery/learning goal orientation in contrast to performance goal orientations (approach and avoidance) has the most positive impact on various aspects of the educational procedure. More specifically, with regard to teacher-related variables, empirical findings suggest that mastery oriented teachers present higher levels of job satisfaction (Papaioanou & Christodoulidis, 2007;Skaalvik & Skaalvik, 2013), positive perceptions and behaviors of help seeking (Butler, 2007;Nitsche, Dickhäuser, Fasching, & Dresel, 2011), engagement (Parker, Martin, Colmar, & Liem, 2012;Skaalvik & Skaalvik, 2013), didactic, educational and subjectspecific interest (Paulick, Retelsdorf, & Möller, 2013;Retelsdorf, Butler, Streblow, & Schiefele, 2010), adaptive coping strategies towards work threats-challenges and reduced burnout (Parker et al., 2012;Retelsdorf et al., 2010), reduced occupational strain, positive attitude towards further training and attended training workshops (Nitsche et al., 2013), and higher levels of self-efficacy (Cho & Shim, 2013;Hoffmann, Huff, Patterson, & Nietfeld, 2009;Nitsche et al., 2011). Additionally, with regard to instruction-related variables, mastery oriented teachers provide higher levels of support for students' question asking, help seeking and reduced inhibition (Butler & Shibaz, 2008), use more mastery-oriented practices and cognitive stimulating instruction (Butler & Shibaz, 2014;Retelsdorf et al., 2010), provide higher school mastery goal structure (Cho & Shim, 2013) and lower performance goal structures (approachavoidance) (Dresel, Fasching, Steuer, Nitsche, & Dickhäuser, 2013), utilize more individual and less social reference norms (Retelsdorf & Günther 2011), have students with higher levels of interest and lower levels of cheating (Butler & Shibaz, 2008;. ...