Final answer:
Intrinsic motivation tends to enhance work enjoyment and effort, but introducing extrinsic rewards can reduce this intrinsic interest, especially if expected. Sometimes, praise may increase intrinsic motivation, and an autonomy-supportive learning environment can help maintain it.
Step-by-step explanation:
Research studies have demonstrated that people who are intrinsically motivated generally work harder and enjoy their work more, compared to those who are extrinsically motivated. Intrinsic motivation, which arises from within the individual, engages one in activities for the sake of personal satisfaction, not for external rewards like money or praise. However, when an individual receives extrinsic rewards for an activity they enjoy, it may lead to the overjustification effect, where intrinsic motivation is diminished, as was the case with Odessa who loved baking. This can create a dependence on external rewards and diminish the initial joy associated with the activity.
It's important to note that not all extrinsic rewards have a detrimental effect on intrinsic motivation. For example, unexpected rewards or non-tangible rewards, such as verbal praise, may not negatively impact, and can even sometimes enhance intrinsic motivation. The educational context is quite informative in this regard, where intrinsic motivation to learn is increased in environments that support autonomy, provide a sense of belonging, respect, and offer challenging but doable tasks.