Rewards - Effort and Motivation
Five short lessons on how rewards, metrics, effort and favors shape what we value and why we keep doing things.
Why we do something often matters more than what we do. Targets can replace the goals they measure, payment can replace enjoyment, effort can create love, comfort can stop growth, and asking for help can win a friend.
When the Number Replaces the Thing It Measures
Published 2026-08-31 · Watch the short
The short opens with three examples. A grade can ruin learning, views can ruin creativity and money can ruin value, because once people are rewarded for a number they begin to serve the number instead of what it was meant to measure. This pattern is called Goodhart’s law, and the simple version is that when a measure becomes a target, it stops being a good measure.
| Aim | Measure | What can go wrong |
|---|---|---|
| Learning | Grade | Students learn how to pass |
| Meaningful work | Views | Creators learn how to trigger attention |
| Creating value | Profit | Business learns how to extract |
The dangerous part is that the system still looks successful. The charts go up while the thing the number was meant to protect may already be dying.
Note
The same short was posted twice, on 2026-08-31 and 2026-08-03, so both links are cited in the references.
Paying for Something You Love Can Kill It
Published 2026-08-19 · Watch the short
In 1971 the psychologist Edward Deci gave college students an interesting puzzle, the Soma cube. One group was paid a dollar for each solution and the other group was paid nothing. He then left the room and watched what they did when nobody was making them do anything.
| Group | What happened when left alone |
|---|---|
| Unpaid | Kept playing because they liked it |
| Paid | Stopped once the reward was gone |
Psychologists later named this the overjustification effect. According to the short, the brain tracks not only whether you like something but why you are doing it, so an external reason can quietly overwrite the internal one. The examples given are a hobby turned into a job, affection counted like a currency, and a child paid per book who stops reading for fun.
Important
This is the video’s account of the study. Later research has shown that the effect depends on the kind of reward and the situation, so treat it as a risk, not a certainty.
The IKEA Effect and the Power of Finishing
Published 2026-07-15 · Watch the short
People often love furniture they assembled themselves, even if it is crooked. The researchers Michael Norton, Daniel Mochon and Dan Ariely studied this by asking people to build IKEA boxes, fold origami and assemble LEGO sets. The builders valued their own amateur creations about as highly as an expert’s version, and far more than strangers did. The finding is called the IKEA effect.
The twist in the short is that the effect only works if you finish. When people built something and then destroyed it, or stopped halfway, the attachment disappeared. The claim is that value comes from completion and effort, not from how good the result is.
- The crooked shelf and the lopsided cake are loved because you did not stop.
- Quality of the object matters less than the effort spent finishing it.
Struggle Builds the Brain, Routine Only Maintains It
Published 2026-08-03 · Watch the short
A daily crossword may make you better at crosswords, not better at thinking. The short says people confuse mental activity with mental challenge. Once something is familiar the brain becomes efficient, which means it spends less energy, and efficient does not always mean stronger.
Real growth, the video argues, comes from cognitive friction, the moment the brain must work in an unfamiliar way.
- Learning an instrument or a language
- Taking a route without GPS
- Writing with the opposite hand
- Having a hard conversation without the old defense pattern
- Reading something that challenges your worldview
Note
The claim that familiar activity does not strengthen thinking is the speaker’s argument and is stated without cited studies.
Discomfort is read as a sign that the mind has reached the edge of its current pattern, not that you are failing. In the short’s words, repetition can maintain you but friction is what changes you.
The Benjamin Franklin Effect
Published 2026-07-09 · Watch the short
To make someone like you, ask them for a favor instead of doing one for them. The story told is that Benjamin Franklin had a political rival who disliked him. Franklin asked to borrow a rare book from the man’s library, returned it with a thank you note, and the two became allies. Franklin later wrote that a person who has done you one kindness will be readier to do you another than someone you have obliged yourself.
The proposed mechanism is cognitive dissonance. The brain notices the conflict between “I dislike this person” and “I just helped them”, and resolves it by quietly changing the belief instead of the behavior.
Important
The Franklin anecdote and its explanation are presented as the video’s account. It is a popular story, not a controlled experiment.
Conclusion
The five shorts share one thread. Motivation is shaped by the reason behind an action, and people tend to value what costs them effort. Rewards and targets can hollow out meaning, finishing and friction create value and growth, and a small favor can build a bond. Before adding a reward or a metric, ask what it might replace.
FAQ
- They kept playing more than the unpaid group
- They stopped playing once the reward was gone
- They solved the puzzle faster
- They asked for more money
(2) The unpaid group kept playing because they liked it, while the paid group stopped once the money was no longer involved.
According to the short, the overjustification effect means an external reason can quietly overwrite an internal one.
True. The brain tracks why you are doing something, so a new outside reason can replace the original enjoyment.
- When the object is cheap
- When strangers criticize it
- When the builder stops halfway or destroys the creation
- When the object is crooked
(3) When people built something and then destroyed it or stopped halfway, the love disappeared completely, so completion is what creates the attachment.
The short claims that doing the same crossword every morning is the best way to keep growing mentally.
False. It argues that familiar activity makes the brain efficient but not necessarily stronger, and that real growth comes from cognitive friction.
- Fear of authority
- Cognitive dissonance, where the brain updates the belief instead of the behavior
- Social pressure from a group
- A financial reward
(2) Helping someone you dislike creates a conflict, and the brain resolves it by quietly softening the belief that you dislike them.
| Idea | Description |
|---|---|
| A. Goodhart’s law | 1. A paid reward replaces the enjoyment of an activity |
| B. Overjustification effect | 2. A measure used as a target stops measuring well |
| C. IKEA effect | 3. Valuing what you built and finished yourself |
A - 2, B - 1, C - 3.
Vocabulary
References
- Travis Mayo. The number wins (Goodhart’s law). YouTube Shorts, 2026-08-31.
- Also posted: YouTube Shorts, 2026-08-03
- Travis Mayo. The overjustification effect and Edward Deci. YouTube Shorts, 2026-08-19.
- Travis Mayo. July 14, 2026 (the IKEA effect). YouTube Shorts, 2026-07-15.
- Travis Mayo. Your brain needs struggle to grow. YouTube Shorts, 2026-08-03.
- Travis Mayo. A counterintuitive way to build rapport. YouTube Shorts, 2026-07-09.