The Overjustification Effect: How Rewards Kill Motivation

Imagine a child who loves drawing. Nobody asks him to draw, nobody promises him a gift, and nobody checks whether his work deserves a prize. He simply picks up his colours and starts creating something.

Now imagine that his parents begin offering money for every drawing, a toy for every completed picture, and a bigger reward for winning a competition. Initially, he may draw more often. But what happens when the rewards stop?

Will he still draw because he enjoys it, or will drawing begin to feel like something worth doing only when there is a prize at the end?

This question lies at the heart of a psychological concept called the overjustification effect. It explains how an external reward can sometimes weaken the internal interest that made a person enjoy an activity in the first place.

The idea has important implications for Indian parenting, education, competitive exams, and workplace incentives. But the lesson is not that rewards are always harmful. It is that rewards can change how we understand our own reasons for doing something.

📌 Key Takeaways

• ✅ The overjustification effect occurs when expected external rewards can reduce intrinsic interest in an activity.
• ✅ Paying children for every mark or task can sometimes shift attention from learning to rewards.
• ✅ Genuine praise and feedback that builds competence can support motivation.
• ✅ Financial incentives can help with some tasks, especially when used thoughtfully.
• ✅ The goal should be to use rewards without making them the only reason to learn, create, or work.

What Is the Overjustification Effect?

Intrinsic motivation comes from within. You read a book because the subject fascinates you, solve a puzzle because you enjoy the challenge, or learn a new skill because you are curious.

Extrinsic motivation, on the other hand, comes from an outcome separate from the activity itself. You study to earn a reward, complete a task to receive a bonus, or practise a skill to avoid criticism.

Both types of motivation can influence behaviour, and they can exist together. The problem arises when an activity that was already enjoyable becomes strongly associated with an external reward.

A person may gradually start thinking, even without consciously realising it, “I am doing this for the reward.” The activity itself becomes less important, and the external outcome becomes the main reason to continue.

That is the basic idea behind the overjustification effect: an external incentive can sometimes reduce the intrinsic interest that existed before the incentive was introduced.

The Famous 1973 Drawing Experiment

In 1973, psychologists Mark Lepper, David Greene, and Richard Nisbett conducted a now-famous experiment involving preschool children who already enjoyed drawing with colourful markers.

The researchers divided the children into three conditions:

• Expected reward: Children were told in advance that they would receive a reward for drawing.
• Unexpected reward: Children were given a reward after drawing, without expecting it beforehand.
• No reward: Children drew without being promised or given a reward.

The researchers later observed the children's interest in drawing when they could choose activities freely. Children who had expected a reward showed less subsequent interest in drawing than children in the other two conditions.

The distinction was important. The study did not show that every gift destroys creativity. Instead, it suggested that promising a reward for an activity children already enjoyed could change their later interest in that activity.

The research was published in the Journal of Personality and Social Psychology. It became a foundational study in the discussion of how external rewards can influence intrinsic motivation.

Research source: Lepper, Greene, and Nisbett (1973), “Undermining Children's Intrinsic Interest With Extrinsic Reward”.

What Did the Larger Research Say?

One experiment is not enough to establish a universal rule. To examine the wider evidence, Edward Deci, Richard Koestner, and Richard Ryan published a meta-analysis in 1999 that reviewed 128 studies on extrinsic rewards and intrinsic motivation.

Their analysis found that certain expected, tangible rewards—particularly rewards tied to participation, completion, or performance—could undermine free-choice engagement in activities. Some reward conditions also reduced participants' reported interest.

However, the same analysis found that positive feedback could enhance both free-choice behaviour and reported interest. This matters because encouragement that communicates competence is not psychologically identical to a prize offered as a condition for doing something.

Researchers have debated the size and generality of the effect. Other meta-analyses have reached more qualified conclusions, suggesting that outcomes depend on factors such as the type of reward, the task, and how motivation is measured.

The balanced conclusion is that rewards can sometimes undermine intrinsic motivation, especially when they feel controlling. The effect is not inevitable, and the evidence does not justify saying that all rewards are bad.

Research source: Deci, Koestner, and Ryan (1999), “A Meta-Analytic Review of Experiments Examining the Effects of Extrinsic Rewards on Intrinsic Motivation”.

When Studying Becomes a Transaction

Consider a familiar situation in an Indian household. A child is curious about science and enjoys understanding how things work. The child reads beyond the textbook, asks questions, and experiments with simple activities.

Then the family introduces a reward system: ₹500 for scoring above 90 per cent, a new phone for topping the class, or a special gift for every examination result that meets a target.

There is nothing automatically wrong with celebrating achievement. The risk appears when the child starts associating studying mainly with the prize.

Instead of asking, “Why does this happen?” the child may begin asking, “Will this come in the exam?” Instead of reading a chapter out of curiosity, the child may focus only on what is needed to earn the reward.

If the reward disappears, the reason to study may disappear with it. This is one way a reward system can unintentionally shift attention away from learning itself.

But context matters. A child who struggles to begin a difficult or boring task may benefit from a modest incentive. Rewards can also help establish routines. The concern is not the occasional gift; it is making external rewards the primary reason for every learning activity.

Marks, Ranks, and the Fear of Falling Behind

In a highly competitive education environment, children can receive several messages at once: learn something meaningful, score higher than your classmates, satisfy your parents, and secure admission to a prestigious institution.

When every activity is measured through marks, ranks, certificates, and prizes, learning can begin to feel like a series of transactions. The question changes from “What can I understand?” to “What result will I get?”

This does not mean that examinations or academic goals are unnecessary. Marks can provide useful information, and academic achievement can open important opportunities. The problem is treating marks as the only meaningful outcome of education.

Parents can protect curiosity by asking children what surprised them during a lesson, what they found difficult, or what they would like to explore further. Such questions make the process of learning visible, not just the final score.

A child should be able to feel proud of a good result while also understanding that learning has value beyond a report card.

Why Praise Is Not the Same as a Prize

If rewards can sometimes reduce intrinsic motivation, should parents and teachers stop praising children? No. That would be the wrong conclusion.

Positive feedback can strengthen a person's sense of competence. When it is specific, sincere, and focused on effort or strategy, it can help someone understand what they did well and how they can improve.

Compare these two responses to a child who solves a difficult maths problem:

• Reward-focused response: “You got it right, so now you deserve a gift.”
• Informative feedback: “You tried a different method when the first one did not work. That helped you solve it.”

The first response connects success to an external prize. The second draws attention to the child's approach and developing ability.

Even praise can become controlling if it makes affection or approval feel conditional. The aim is not to praise constantly, but to give honest feedback that supports learning rather than creating pressure to perform for approval.

The Workplace Version: When Bonuses Become the Only Motivation

The overjustification effect is not limited to children. Adults can also experience changes in motivation when external incentives become central to their work.

Imagine a customer service employee who enjoys solving problems and helping customers. The employee takes pride in finding practical solutions and building trust.

Now suppose the company introduces a bonus based almost entirely on the number of calls handled each day. The employee may begin prioritising call volume over careful problem-solving because that is what the incentive rewards.

The employee has not necessarily become less hardworking. The system has changed which behaviours are most valuable to them.

This example also illustrates a related problem in incentive design: people often concentrate on what is measured and rewarded. A bonus can increase the target behaviour while reducing attention to other important outcomes, such as quality, cooperation, or customer satisfaction.

That is not proof that every workplace bonus causes the overjustification effect. Financial incentives can be useful for measurable goals, difficult assignments, and work that employees would not otherwise choose to do. The psychological risk is greater when rewards feel controlling or crowd out the satisfaction people previously found in their work.

When Rewards Can Actually Help

A balanced understanding of motivation recognises that external rewards have legitimate uses. Not every task is naturally interesting, and not every person begins with a strong internal desire to do it.

Rewards may help in situations such as these:

• Starting a new routine: A small incentive can help someone begin a habit before it becomes familiar.
• Recognising achievement: An unexpected gift or thoughtful celebration can communicate appreciation without making the reward a condition of participation.
• Compensating for work: Fair wages and bonuses can recognise effort, responsibility, and measurable contributions.
• Giving useful feedback: Recognition that communicates genuine competence and progress can support motivation.

The key is to consider what a reward communicates. Does it recognise someone's achievement, or does it suggest that the person should perform only because something is being offered in return?

How Parents and Teachers Can Protect Intrinsic Motivation

Parents do not need to eliminate pocket money, gifts, praise, or academic targets. A few thoughtful changes can help keep curiosity and personal growth at the centre of learning.

Connect Learning With Curiosity

Whenever possible, connect a lesson to something children can observe in everyday life. A science concept becomes more interesting when a child can see it at work. Mathematics becomes more meaningful when used to solve a practical problem.

Recognise Effort and Strategy

Instead of focusing only on marks, notice persistence, thoughtful questions, improvement, and the willingness to try another approach. Be specific rather than offering empty praise.

Avoid Making Every Activity a Competition

Children need opportunities to draw, read, play, experiment, and explore without having every activity graded or compared. Free choice can help them discover what genuinely interests them.

Use Rewards Thoughtfully

A reward can be appropriate when a task is difficult or a goal matters. However, avoid making every act of learning dependent on a promised prize. Sometimes, an unexpected celebration is different from a reward that children must earn every time.

Give Children Some Choice

Let children choose a book, select a project topic, or decide which of two assignments to complete first when practical. A sense of ownership can make learning feel less like an imposed obligation.

Frequently Asked Questions

Q.1 What is the overjustification effect in simple words?

It is the possibility that rewarding someone for an activity they already enjoy can reduce their interest in doing it for its own sake, particularly when the reward is expected and controlling.

Q.2 Should parents stop giving children rewards for good marks?

Not necessarily. Celebrating achievement is not automatically harmful. Parents should avoid making rewards the only reason children study and should also encourage curiosity, understanding, persistence, and independent learning.

Q.3 Do rewards always reduce intrinsic motivation?

No. The effect depends on the type of reward, whether it is expected, how it is presented, the activity, and the person receiving it. Research has also found that positive feedback can support intrinsic motivation.

Q.4 Can financial incentives reduce motivation at work?

They can in some circumstances, especially when employees feel controlled or become focused only on rewarded metrics. However, fair pay and well-designed incentives can also encourage performance. The outcome depends on the job and how the system is designed.

Q.5 What is the difference between intrinsic and extrinsic motivation?

Intrinsic motivation means doing something because it is interesting or satisfying in itself. Extrinsic motivation means doing it to obtain a separate outcome, such as money, marks, recognition, or avoiding a penalty. Both can influence the same activity.

Do Not Let the Prize Become the Whole Purpose

Rewards are powerful because they can influence what people choose to do. But motivation is more complicated than simply offering something valuable in exchange for effort.

A child who learns only for marks may struggle to find a reason to learn when examinations end. An employee who works only for a bonus may lose sight of the satisfaction of doing meaningful work. These outcomes are not inevitable, but they remind us to look beyond immediate performance.

The goal is not to remove every reward from life. It is to make sure rewards support meaningful activities rather than replace the reasons those activities mattered in the first place.

Because the deepest form of motivation is not always the one that produces the quickest result. Sometimes, it is the one that remains even when there is no prize waiting at the end.

For more on learning and behaviour, read AI Tutor vs Coaching Classes: Can AI Replace ₹2 Lakh Coaching? and explore how our thinking and choices shape everyday life in Confirmation Bias: Why Educated Indians Believe What They Want to Believe.