... Mastery goals, as grounded on selfimprovement, are positively associated with adaptive learning outcomes across various subjects and age groups (e.g., Anderman & Midgley, 1997;Kaplan, Middleton, Urdan, & Midgley, 2002;Roeser, Midgley, & Urdan, 1996;Wolters, 2004). Specifically, mastery orientations have been consistently found to be positively related to behavioral and emotional engagement (Gonida, Kiosseoglou, & Voulala, 2007;Gonida,Voulala, & Kiosseoglou, 2009), perceived emotional and instructional support by the teacher (Patrick, Kaplan, & Ryan, 2011;Sideridis, 2007), academic self-concept (Skaalvik & Skaalvik, 2013), cognitive and metacognitive strategy use, interest, preference for challenging tasks, persistence, and positive attitudes towards school (Ames, 1992;Urdan, 1997). Nevertheless, there are some studies where the association of mastery goals with achievement or test performance was not supported by the empirical data (e.g., Elliot & Church, 1997;Elliot & McGregor, 1999;Senko & Miles, 2008). ...