Intrinsic motivation means the reason for doing something sits inside the activity. Extrinsic motivation means the reason sits outside it, in a reward, a rating, a deadline or somebody’s approval.
That is the whole distinction, and it is less about which one is virtuous than about what happens when the outside reason is removed.
The test that separates them
The cleanest way to tell which one you are running on is to ask what would happen if the consequence vanished.
If your employer stopped paying you, would you still turn up? Almost nobody would, and that is not a character flaw. If your teacher stopped marking your essays, would you still write them? Some people would. If nobody ever saw the photographs you take, would you still take them?
Researchers use a version of this in the laboratory, and it has a name: the free-choice period. Participants do a puzzle or a task, the experiment is apparently over, the researcher leaves the room, and what gets measured is whether the person keeps playing with the thing while alone and unobserved. Nothing is riding on it any more. Whatever they do next is the closest thing to a direct reading of intrinsic motivation anyone has built.
What happened when people were paid
In 1999 a meta-analysis pulled together 128 experiments that had run some version of that free-choice test, and the result is the reason this distinction is taught at all.
Tangible rewards significantly reduced how much people freely chose to keep going once the reward was withdrawn. The size of the effect depended on what the reward was attached to. Rewards given simply for engaging with the task at all produced the largest drop, at a standardised effect of −0.40; rewards for completing it produced −0.36; rewards tied to how well the person performed produced −0.28. [deci-1999-rewards-meta]
Verbal feedback did not behave like this. Praise and informative comments went the other way and tended to increase free-choice engagement, which matters because it means the finding is not “rewards are bad”. It is something more specific about being given a thing in exchange for an activity you were already willing to do.
The word people reach for is that the reward “crowds out” the original reason. The likelier mechanism is plainer. A reward changes what the activity looks like it is for, including to the person doing it, and once the most obvious answer to “why am I doing this” is “because I get paid”, removing the payment removes the answer.
Extrinsic motivation is not one thing
The version of this taught as a two-box diagram is where most of the usefulness gets lost. Self-determination theory splits the outside-reason category into a range, ordered by how much the reason has become the person’s own. [ryan-deci-2000-sdt-types]
| What is driving it | The reason in your own words | Where it sits | What happens when nobody is checking |
|---|---|---|---|
| Avoiding a consequence | ”I will get in trouble if I do not.” | Furthest outside | It stops |
| Guilt or self-image | ”I would feel like a failure if I skipped it.” | Outside, but internalised | It continues, and it costs |
| Accepting the reason | ”This matters to me, so I do it.” | Close to the inside | It continues |
| Fitting your other values | ”This is the kind of person I am trying to be.” | Almost inside | It continues |
| The activity itself | ”I like doing this.” | Inside | It continues, and it is not effortful |
Two rows in the middle are where most useful work sits. Almost nothing an adult has to do is intrinsically enjoyable, and almost nothing an adult keeps doing for years runs purely on threat. The realistic target is the third and fourth rows, where the reason is genuinely yours even though the activity is not fun.
The second row is worth naming because it is frequently mistaken for the fourth. Doing something out of guilt or to avoid feeling worthless is technically self-imposed, so it looks like ownership from the outside, and it produces the persistence people admire. It is also associated with worse wellbeing than the rows below it, and it is exactly the engine that runs until it stops.
What this looks like as it wears out
The failure mode is not that you wake up one day with no motivation. It is that the reason you were using quietly moves up the table, from the bottom rows towards the top ones, and nothing about your behaviour changes until it does.
A schematic of the pattern described in this article and in the sources cited, not measured data.
The second panel is the shape people describe when they say they used to love the job. The activity did not change. What changed is which line is carrying it, and by the point the grey line is the tallest, stopping feels impossible and continuing feels pointless at the same time.
That combination has a name in the research literature. Burnout is characterised by exhaustion, by a growing distance from the work, and by a collapse in how effective you feel at it, and it is understood as arising from the chronic mismatch between a person and the demands of a job rather than from personal weakness. [maslach-leiter-2016-motivation] Our guide to burnout covers what that mismatch looks like and what actually helps.
What to do with the distinction
Four things follow, and none of them is “become intrinsically motivated”, which is not an instruction anybody can follow.
Do not attach a reward to something you already like. This is the one direct implication of the meta-analysis, and it is routinely got backwards by people trying to build a habit. If you enjoy running, do not start paying yourself for runs. You are converting a reason that survives on its own into one that needs topping up.
Say the real reason out loud, in your own words. Not the reason on the appraisal form. The point of the exercise is to find out whether there is a third or fourth-row reason underneath, and the honest answer is sometimes that there is not, which is worth knowing early.
Change the how, when the what is fixed. Most of the difference between the rows is a sense of choosing rather than being pushed. You frequently cannot change the task. You can more often change the order, the timing, the method or the setting, and that is not a trivial substitute.
Watch for the guilt row. If the honest sentence is “I would feel disgusting if I stopped”, that is doing the work of motivation and charging for it. Our guide to motivation and discipline covers why building the structure beats relying on either feeling, and our guide to finding motivation when you have none covers what to do on the days when nothing gets you started.
If the flatness extends past work into everything you used to like, that is a different pattern and worth taking seriously rather than working around. Our guide to burnout and depression covers how the two are told apart.
When to seek help
Speak to a doctor if low motivation has lasted more than a couple of weeks and has spread beyond one situation, particularly if it comes with poor sleep, appetite changes, or a loss of interest in things that used to be reliable.
Say plainly how long it has been going on and what you have stopped doing, since the pattern matters more than the intensity. Ask specifically whether what you are describing sounds like burnout or like depression, because the answer changes what is offered.
Seek help promptly if you have started avoiding people, if you are using alcohol to get through the evening, or if you feel numb rather than tired. Go urgently if you have thoughts of harming yourself or of not wanting to be alive.
How MyFreud can help
Noticing which reason is carrying you is hard from the inside, because the change is slow and every day looks like the last one. MyFreud gives you daily mood tracking that takes seconds and shows the pattern over months, which is the timescale this actually moves on.
Download MyFreud and start today: App Store or Google Play.