1. Classrooms: Goals, structures, and student motivation;Ames;Journal of Educational Psychology,1992
2. Social foundations of thought and action: A social cognitive theory;Bandura,1986
3. Self-efficacy: The exercise of control;Bandura,1997
4. Intrinsic motivation in the classroom;Lepper,1989
5. A theory of goal setting and task performance;Locke,1990