Factor analysis of teacher rating scales has often identified components which focus on the instructor's respective roles as actor and interactor. A total of 208 Purdue University instructors were rated by their students on the Course-Instructor Evaluation form in an attempt to: (1) determine the relationships between specific and global items, and (2) determine the factor structure of the scale with and without the global items (the overall course and overall instructor ratings). The results showed lack of independence between specific and global ratings, and three relatively independent dimensions, actor, interactor, and text-test as factors. (Author)