The findings from Deci (1971) and Cameron, Pierce, and Sylvia (2004) found that extrinsic motivation has the capability of undermining intrinsic motivation. In the current experiment, 32 participants were asked to solve anagrams on a list given to them. One list contained easy anagrams (3-letters) and the other contained hard anagrams (5-letters). Only half of the participants were told there was a money prize for the participant who solved the most anagrams. It was expected that participants who were told this would perform better; regardless of the difficulty they were given. The results did not support this hypothesis, and found that the no-reward group performed better than the reward group.
"Monetary Reward & Task Performance: A Study of Work Motivation,"
The Huron University College Journal of Learning and Motivation:
1, Article 3.
Available at: http://ir.lib.uwo.ca/hucjlm/vol52/iss1/3