The purpose of the study was to examine Turkish high school students’ perceptions of their science teachers’ interpersonal behaviour and to investigate variables affecting students’ perceptions of their science teachers’ interpersonal behaviour and to figure out what (interpersonal) profiles can be discerned in class (aggregated) perceptions of these teachers. Data were collected utilizing an adapted and translated version of the Questionnaire on Teacher Interaction(QTI). A total of 2342 students (Grades 9 to 11) from 81 science classes (14 public schools) in three major cities (Ankara, Bursa and ‹zmir) of Turkey participated in the study. Correlation analyses, regression analyses and analyses of variance revealed there were significant dif...