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Effects of Feedback Sign on Group Goal Setting, Strategies, and Performance
Mesch, Debra J., (1994)
The effects of "intrinsic" and "extrinsic" reinforcement contingencies on task behavior
Scott, W. E., (1988)
The effects of task variability, sensory reinforcement, and monetary reinforcement on performance, satisfaction, and intrinsic motivation
Farh, Jiing-Lih, (1983)