80
Pittman, Boggiano, and Ruble, “Intrinsic and Еxtrinsic Motivational Orientations”.
81
Bénabout and Tirole, “Intrinsic and Extrinsic Motivation”, p. 504.
82
Bruno S. Frey and Margit Osterloh, “Motivate People with Prizes”, Nature 465, no. 17 (June 2010), p. 871.
83
George Akerlof, “Labor Contracts as a Partial Gift Exchange”, Quarterly Journal of Economics 97, no. 4 (1982), 543–69.
84
Bruno S. Frey and Reto Jegen, “Motivation Crowding Theory”, Journal of Economic Surveys 15, no. 5 (2001), pp. 589–611; Robert Gibbons, “Incentives in Organizations”, Journal of Economic Perspectives 12, no. 4 (Fall 1998), pp. 115–32, esp. p. 129.
