“…For example, teachers' positive emotions positively affected the students of various grade levels regarding motivation, achievement and social behavior in classes (Turner, Midgey, Meyer, Gheen, Anderman, & Kang, 2002;Turner, Meyer, Midgley, & Patrick, 2003;Wentzel, 1996;Wong & Dornbusch, 2000). In contrast, teachers' yelling made the children to feel small, ashamed, guilty, embarrassed and hurt (Thomas & Montomery, 1998), and their negative emotions are predictors of students' development (Hamre & Pianta, 2001).…”