“…This variety can partly be explained by student-related factors that affect perceptions (such as gender, ethnic background, age), class and school factors (such as school type, denomination, location, class size, grade level, subject matter) and also teacher factors (gender, ethnic background, age, experience) Fisher et al 2006;Fraser 2007;Levy et al 2003;Wubbels et al 2006). Research has also shown that differences between classes in terms of the learning environment that remain after taking into account all of the aforementioned factors are systematic and can be captured in terms of classroom profiles or typologies (den Rickards et al 2005;Telli et al 2007b;Wubbels and Brekelmans 1998;Wubbels et al 2006;Wubbels and Levy 1993). Many of these profiles were established within one particular strand of learning environments research, namely, research on the teacher-student interpersonal relationship, and used one particular instrument to map this behaviour, the Questionnaire on Teacher Interaction (QTI; Wubbels et al 1985).…”