3Dornyei, Z. 2005. The Social Psychology of the Language Learner: Individual Differences in Second Language Acquisition[M].Mahwah, NJ: Lawrence Erlbaum Associates.
4Gardner, R. 1985. Social Psychology and Second Language Learning: The Role of Attitudes and Motiration [M]. London: Edward Arnold.
5Lantolf, J. (ed.). 2000. Sociocultural Theory and Second Language Learning [C]. Oxford: OUP.
6Norton, B. 1995. Social identity, investment, and language learning [J].TESOL Quarterly 29: 9- 31.
8Vroom, V. 1964. Work and Motivation [M]. New.York: Wiley.
9Weiner, B. 1979. A theory of motivation for some classroom experiences [J]. Journal of Educational Psychology 71 : 3-25.
10Wen, Qiufang & R. K. Johnson. 1997. L2 learner variables and English achievement: A study of tertiarylevel English majors in China [J]. Applied Linguistics 18: 27-48.
