1. Ainsworth, M. D. S., Blehar, M. C., Waters, E. & Walls, S. (1978). Patterns of attachment: A psychological study of the Strange Situation. Hillsdale, NJ: Lawrence Erlbaum Associates, Inc.
2. Ames, C. (1990, April). The relationship of achievement goals to student motivation in classroom settings. Paper presented at the Annual Meeting of the American Educational Research Association, Boston.
3. Ames, C. (1992a). Achievement goals and the classroom motivational climate. In D. Schunk & J. Meece (Eds.), Student perceptions in the classroom (pp. 327-348). Hillsdale, NJ: Lawrence Erlbaum Associates, Inc.
4. Archer, J. & Birke, L. I. A. (1983). Exploration in animals and humans. Wokingham, England: Van Nostrand Reinhold.