Why rewarding someone for a hobby can make them quit
If you love drawing, getting paid to draw should make you love it even more, right? Psychology says otherwise. Under the "overjustification effect," introducing external rewards like money or prizes for an activity someone already enjoys can actually kill their intrinsic motivation. The brain begins to view the beloved hobby as "work," shifting the psychological drive from personal joy to external compensation.
The Hidden Cost of External Incentives
Common sense suggests that if an individual genuinely enjoys an activity, adding an external incentive such as money, prizes, or trophies will only increase their enthusiasm. Rewarding good behavior and productive effort is a foundational premise across modern workplaces, parenting methods, and educational systems. However, psychological research demonstrates that under specific conditions, introducing tangible external rewards for an activity someone already finds inherently satisfying can backfire. Instead of reinforcing the behavior, the reward often diminishes the person's natural interest in doing the task once the incentive is removed.
This psychological phenomenon is known as the overjustification effect. It describes an apparent paradox in human motivation where an expected external incentive decreases a person's intrinsic motivation to perform a task. Intrinsic motivation refers to engaging in an activity purely for its own sake—driven by curiosity, enjoyment, personal satisfaction, or genuine interest. When extrinsic rewards are introduced, the internal drive is overshadowed, leading the individual to discount their original love for the activity.
The Landmark Drawing Experiments
The classic empirical demonstration of the overjustification effect was conducted in the early 1970s by researchers Mark Lepper, David Greene, and Richard Nisbett. They observed preschool children who naturally showed a strong intrinsic interest in drawing during their free-play time. The researchers divided these children into three distinct groups. One group was promised a special certificate with a ribbon—a "Good Player Award"—if they agreed to draw with felt-tip pens. A second group drew with the pens and received the same award as an unexpected surprise after finishing. The third group simply drew without any promise or receipt of a reward.
A few weeks later, the researchers placed the drawing materials back in the classroom during free-choice playtime and secretly observed the children's spontaneous behavior. The children who had previously received an expected reward spent significantly less time drawing with the markers compared to their initial baseline and compared to the other two groups. By contrast, children who received no reward or received an unexpected reward maintained their original, high levels of engagement. The mere expectation of a reward had altered how the first group viewed the activity itself.
Why the Brain Reframes Play as Work
Two prominent psychological frameworks explain why this motivational shift occurs: self-perception theory and cognitive evaluation theory. According to Daryl Bem's self-perception theory, people often act as outside observers of their own actions. When individuals attempt to understand why they are doing something, they look for observable causes. If an external reward is prominent and expected, they attribute their participation to the reward rather than internal desire. In essence, the person concludes, "If I am getting paid or rewarded for this, I must be doing it for the reward, not because I want to."
Cognitive evaluation theory, developed by Edward Deci and Richard Ryan as part of self-determination theory, offers a complementary perspective focused on human needs for autonomy and competence. This theory proposes that rewards contain two primary components: a controlling aspect and an informational aspect. When a reward is experienced as controlling—meaning it feels like a tool used by someone else to dictate or influence behavior—it undermines a person's sense of autonomy. The perceived locus of causality shifts from internal ("I choose to do this") to external ("I am being made to do this"), reducing intrinsic motivation.
The Crucial Role of Reward Types
The overjustification effect does not mean that all rewards automatically destroy motivation. Research highlights critical distinctions between different types of incentives and how they are administered. Tangible rewards, such as cash, physical prizes, or tokens, are far more likely to produce an overjustification effect than intangible rewards. In contrast, intangible incentives like verbal praise, constructive feedback, and social recognition often maintain or even increase intrinsic motivation, provided they are perceived as sincere and not manipulative.
Timing and contingency also play a decisive role. Unexpected rewards given after a task is completed rarely trigger the overjustification effect because the person engaged in the task without anticipating a payoff. Furthermore, researchers distinguish between task-contingent rewards (given simply for doing or completing an assignment) and performance-contingent rewards (given for achieving a specific standard of excellence). Performance-contingent rewards provide competence-affirming feedback, which can sometimes preserve intrinsic interest, although they still carry the risk of feeling pressuring or controlling.
Baseline Interest and Appropriate Applications
A vital boundary condition of the overjustification effect is the initial level of interest in the task. If an individual has little to no intrinsic interest in an activity to begin with—such as doing repetitive chores, memorizing arbitrary data, or following mundane safety protocols—external rewards do not cause harm. In these cases, there is no internal motivation to undermine. Tangible incentives can serve as highly effective tools to initiate engagement, encourage skill acquisition, or ensure necessary compliance.
Similarly, external rewards can help bridge the gap during the early, frustrating stages of learning a complex skill before intrinsic pleasure can take root. For instance, practicing fundamental drills in music or athletics may feel tedious initially. While extrinsic incentives can help establish early habits, long-term mastery and sustained dedication typically require a gradual transition toward intrinsic motivators, such as the joy of creative expression or personal mastery.
Academic Debates and Real-World Impact
The scope and universality of the overjustification effect have generated considerable academic debate. In the 1990s and 2000s, behaviorist researchers such as Judy Cameron and Robert Pierce conducted meta-analyses arguing that the negative effects of rewards were overstated, claiming that tangible rewards cause little harm under most practical conditions. However, subsequent comprehensive meta-analyses by Edward Deci, Richard Koestner, and Richard Ryan reaffirmed that expected, tangible rewards tied directly to task performance consistently undermine intrinsic motivation across diverse age groups and settings.
These findings carry substantial implications for real-world policy and incentive structures. In education, programs that pay students cash or give commercial prizes for reading books risk turning reading into a transactional chore rather than a lifelong personal habit. In the workplace, high-stakes incentive schemes can inadvertently stifle creative problem-solving and organic collaboration by narrowing focus strictly to the metrics tied to bonuses. Understanding the overjustification effect allows educators, managers, and parents to design incentive structures that support autonomy rather than unintentionally eroding internal drive.
Key takeaways
•The overjustification effect occurs when introducing expected, tangible external rewards undermines a person's preexisting intrinsic interest in an activity.
•Classic experiments show that offering expected rewards for creative activities causes individuals to spend less free time on those activities later, whereas unexpected rewards do not.
•The effect is explained by self-perception theory (attributing actions to external payoffs) and cognitive evaluation theory (a loss of perceived autonomy and internal control).
•Intangible rewards like verbal praise and incentives applied to tasks with no initial intrinsic appeal do not typically cause the overjustification effect.