4Cattel R B.The Assessment of Teaching Ability[J].British Journal of Educational Psychology, 1931 ,(1 ):48-72.
5Ryan D. Characteristics of Teachers [C]. American Council on Edu- cation, Washington D.C., 1960:50.
6Brophy J E, Good T L. Teacher behavior and student achievement [A]//Wittrock M C. Handbook of Research on Teaching [C]. New York; Macmillan. 1984: 328-275.
