2Student sex and Classroom Behavior,in Torsten Husen(ed.),The International Encyclopedia of Education, Pergamon Press, 1985, Vol.8.
3Philip W. Jackson Life in Classroom New York: Teachers College Press 1990. pp.32～33.
4Husen, Torsten and Postlethwaite, T.Neville, 1985,Nonver BAL Communication in classrooms.
5M.Hammersley,The mobilization of pupil attention. In Martyn Harmmersley and Peter Woods (eds.), The Process of Schooling: A Sociological Reader. London: Routledge and Kegan Paul, 1976, pp. 110.
