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Dafoe, J.L., Greene D., Lepper, M.R., Sagotsky G. (1982). Consequences of superfluous social constraints: effects on young children’s social interferences and subsequent intrinsic interest. Journal of Personality and Social Psychology, 51-65.


Lepper M.R. (1981). Intrinsic and extrinsic motivation in children: Detrimental effects of superfluous social controls. In W.A. Collins (Ed.), Aspects of the development of competence: the Minnesota Symposium on Child Psychology.


Greene, D., Lepper, M.R. (1975). Turning play into work: Effects of adult surveillance and extrinsic rewards on children’s intrinsic motivation. Journal of Personality and Social Psychology, 479-486.


Greene, D., Lepper, M.R. (1974). Effects of extrinsic rewards on children’s subsequent intrinsic interest. Child Development, 1141-1145.
Greene, D., Lepper, M.R. (1974). Intrinsic Motivation: How to Turn Play Into Work. Psychology Today, 49-54.


Greene, D., Lepper, M.R., Nisbett, R.E. (1973). Undermining Children’s Intrinsic Interest with Extrinsic Reward: A test of the “Overjustification” hypothesis. Journal of Personality and Social Psychology, 129-137.

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