Achievement motives and goals: A developmental analysis.

Elliot, A. J., Conroy, D., Barron, K. E., & Murayama, K. (2010). Achievement motives and goals: A developmental analysis. In M. Lamb, A. M. Freund, & R. M. Lerner (Eds.). The Handbook of Life-Span Development: Vol. 2. Social and Emotional Development., 474-510. PDF   Online Article