The scenario in which Tesla, who crafts imitation dream catchers in her spare time and because her father constantly encourages her to sell them on ebay. she finally agrees to sell them, but she notices that while she still enjoys making the dream catchers, she no longer does it for fun—she does it to make money this is an example of the over justification effect.
The over justification effect occurs when some extrinsic reward (money for example) leads to a reduction in a person's intrinsic motivation.
