Tangible incentives crowding out intrinsic motivation is known as the overjustification effect.
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However, the review took a less favorable view of the mechanics of discovering documents, arguing that this was over-repetitive and detracted from the intrinsic pleasure of exploration in an overjustification effect.
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A rebuttal defended the original findings, concluding that this analysis by Cameron ( 2001 ) was flawed and that Cameron's inclusion of boring tasks in analyzing potential overjustification effects made little theoretical or practical sense.