Calvin and Hobbes collection

Covington, M. V. (2000). Intrinsic versus extrinsic motivation in schools: A reconciliation. Current Directions in Psychological Science, 9(1), 22-26.

Reeve, J., Bolt, E., & Cai, Y. (1999). Autonomy-supportive teachers: How they teach and motivate students. Journal of Educational Psychology, 91(3), 537–548. 

Ryan, R. M., & Deci, E. L. (2000). Intrinsic and extrinsic motivations: Classic definitions and new directions. Contemporary Educational Psychology, 25(1), 54–67.

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