Oddly Wired
← all facts
motivation

Rewards can turn your favorite hobby into a chore.

Extrinsic incentives often reduce the intrinsic motivation you initially felt for an activity.

A 1973 study found that children who were rewarded for drawing were later less interested in drawing when the rewards stopped. The brain reclassifies the activity as work done for a gain. Your passion becomes a transaction.

The moment you start tracking the output, you change the nature of the work.

Where this comes from

Study
Lepper, Greene, & Nisbett, 1973
What the check found
The attribution is correct. While the specific methodology (children/drawing) is not in the provided snippet, the study is the canonical source for the overjustification effect in psychological literature.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.