The Psych Files

Tag: dopamine

  • You’ve Got Dopamine Backwards (and I Can Prove It On Piano)

    You’ve Got Dopamine Backwards (and I Can Prove It On Piano)

    Picture yourself on the couch, phone in hand, scrolling through a food delivery app. You linger over the dumplings. You consider the spring rolls. You add the spring rolls. You place the order, and for the next forty minutes something in you is quietly humming. Then the bag arrives, the food is a little lukewarm, you eat it in front of the television, and twenty minutes later you can barely remember it. If you have ever noticed that the ordering was more fun than the eating, you are not alone, and somebody has built a website about it.


    A trend that started as a joke


    In September 2026 the New York Times reported on a wave of what are being called dopamine sites, and the story is stranger than the name suggests. It began in March, when a mechanical engineering student in Seoul named Seohyun Park built a site that looks like a food delivery app. You browse, you choose, you order, and nothing comes. The name translates roughly as Food Never Arrives. When you’re done, it totals up the money you didn’t spend and the calories you didn’t eat. Park says she built it as a joke, after noticing that she got more pleasure from placing orders than from eating what showed up. About ten thousand people a month visit it.


    Others followed. Two developers in India built a fake delivery service that hands you real recipes instead of food; it has drawn over two and a half million views. And a developer in South Korea who doesn’t smoke, but who used to tag along on her coworkers’ cigarette breaks, built a site with a large cigarette in the middle of the screen. Tap it and a timed smoke break begins, complete with drifting smoke and a crackling sound, while other visitors’ messages float past. About 150,000 people a month take a break there.


    The easy explanation is in the name: these sites deliver dopamine without the cost. But the popular story about dopamine is wrong, and it’s wrong in a way that makes these sites more interesting, not less.


    Dopamine is not the reward


    Most people carry around a simple model: you eat the chocolate or win the money, your brain releases dopamine, and that release is the pleasure. Reward first, dopamine second. Two lines of research say otherwise.


    The first comes from Wolfram Schultz, Peter Dayan, and Read Montague, who in 1997 recorded from individual dopamine neurons in monkeys learning a simple task. At the start, a squirt of juice made the neurons fire. So far, the popular story holds. But once the monkeys learned that a light reliably came on before the juice, the neurons stopped firing at the juice and started firing at the light. Dopamine tracked the prediction, not the payoff. And when the light came on and no juice followed, the neurons dipped below their resting level. This pattern, called a reward prediction error, is one of the most replicated findings in neuroscience.


    The second comes from Kent Berridge and Terry Robinson at the University of Michigan. Rats, like human babies, make a distinctive face when something sweet touches their tongue, so you can read whether they like a taste directly off their expression. Berridge’s team took rats with almost no dopamine left in the reward system and gave them sugar. The rats made all the same happy faces. What they wouldn’t do was work for it, press a lever for it, or walk across the cage for it. Their liking was intact. Their wanting was gone. Dopamine, on this account, is the chemistry of wanting and anticipation, not of enjoyment.


    Put those together and the people who named these sites got it right for the wrong reason. They think they’re delivering pleasure without the product. What they’re actually delivering is anticipation without the product.


    What a piano chord can teach you


    Musicians have been running this experiment on audiences for centuries. Most Western music sets up a chord that points toward home, then takes you home: tension, then release. A deceptive cadence (an interrupted cadence, in British usage) plays the setup and then steps sideways, so the tension builds instead of resolving. Stack two or three of those in a row before the final chord lands and the landing feels better than it would have if you had gone straight there. The closing seconds of Whitney Houston’s 1991 Super Bowl performance of the national anthem are a famous example: one held note, the orchestra moving underneath it, a stadium waiting for a chord it knows is coming.


    In 2011 Valorie Salimpoor, Robert Zatorre, and colleagues at McGill scanned people listening to music they had chosen because it reliably gave them chills. They found dopamine release at two different moments in two different brain regions. At the peak, the moment of the chills, dopamine was released in the nucleus accumbens. In the seconds before the peak, while the music built toward it, dopamine was released in the caudate. The anticipation had its own signal, and it came first.

    Anticipation has a price tag


    Economists figured this out a long time ago. In 1987 George Loewenstein asked people how much they would pay for a kiss from the movie star of their choice, delivered immediately, in three hours, in a day, in three days, or in a year. Standard economics says sooner is better. People said otherwise: they would pay more for the kiss in three days than for the kiss right now, because three days of looking forward to it was worth something, and a year of waiting was not. That is the deceptive cadence again. Park’s observation about her takeout is the same finding without the economics journal.


    Can a fake meal make you eat less?


    The real hope behind these sites is not just that fake ordering feels good, but that it takes the edge off real ordering. Is there any evidence for that? Sort of. In 2010 Carey Morewedge, Young Eun Huh, and Joachim Vosgerau had people imagine eating M&Ms one at a time. Some imagined eating thirty; others imagined eating three and then imagined feeding coins into a laundry machine twenty-seven times, so that the amount of repetitive imagining was matched. Afterward, everyone was handed a bowl of real M&Ms. The thirty-M&M group ate significantly fewer. The explanation is habituation: your response to a stimulus fades with repetition, and you can apparently wear it out in your imagination without the candy ever touching your tongue.


    Or make you crave more?


    The Times quotes Lingguo Xu, a behavioral economist at the University of Waterloo, worrying that simulated consumption might strengthen cravings rather than satisfy them. That worry has research behind it. Brian Carter and Stephen Tiffany’s 1999 meta-analysis of cue reactivity studies found that showing smokers a cigarette, or playing them the sound of a lighter, reliably raises craving and heart rate. A large cigarette on a screen with drifting smoke and a crackling sound is a cue reactivity stimulus by any definition, and a delivery menu with a photograph of every dish is not far behind.


    And recall the prediction error work. When the light came on and no juice followed, dopamine dipped. A site literally named Food Never Arrives runs the full cue sequence and then withholds the reward. In music, no composer does that; the deceptive cadence works because home is coming. Take home away for good and you don’t have anticipation. You have frustration.


    How do you square this with the M&M study? Morewedge’s participants imagined eating thirty times in a row. That repetition produced the habituation. Most people probably browse a fake menu once, place one order, and laugh. That isn’t thirty repetitions of eating; it’s one very good cue. So these sites may work if used one way and backfire if used another, and nobody has measured which way people actually use them. Every claim in the Times piece about the sites helping anyone is self-report from the people who built them.


    The fake smoke break that made real friends


    One more thing, because it doesn’t fit the dopamine story at all. The creator of the smoke-break site told the Times that visitors began talking to one another about work, school, and whatever was going wrong in their lives, and that some became real friends who now meet in person. (Some of them, she noted, step outside and light up together.) What the site gave people was an excuse to stand next to a stranger for a few minutes and say something. That may be the best thing in the whole article, and it has nothing to do with anticipation.


    What to take away


    Here is what the research agrees on. Dopamine fires at the cue, not at the reward. Anticipation is a pleasure of its own, one people will pay for and musicians have used for centuries. And you can wear anticipation out in your imagination if you repeat it enough. What nobody has tested is which of those things a dopamine site actually does: thirty imaginary meals, or one very good menu. That is not a case of researchers who can’t make up their minds. It’s a specific, answerable question that nobody has gotten around to answering.


    The one thing worth carrying out the door is the correction. Dopamine is not the reward. It is the wanting, the looking forward, the light that comes on before the juice.


    Psychology Terms in This Article


    Reward prediction error. The difference between the reward you expected and the reward you got, signaled by dopamine neurons that fire more when outcomes beat expectations and dip when they fall short. Schultz and colleagues found that once monkeys learned a light predicted juice, dopamine fired at the light and dropped when the juice failed to arrive.


    Wanting versus liking. Berridge and Robinson’s distinction between the motivation to pursue a reward (wanting, tied to dopamine) and the pleasure of consuming it (liking, tied to other systems). Dopamine-depleted rats still enjoyed sugar but would not seek it out.


    Anticipatory utility. The satisfaction gained from expecting a future event, as distinct from experiencing or remembering it. Loewenstein’s participants would pay more for a movie-star kiss in three days than for one right now.


    Habituation. A decrease in response to a stimulus after repeated exposure. Morewedge and colleagues showed that repeatedly imagining eating a food reduced how much of it people later ate.


    Deceptive cadence. In music, a progression in which the chord that points toward the home chord resolves somewhere unexpected instead, delaying the release of tension. Also called an interrupted cadence.

    References

  • The Secret to a Good Joke Is Silence

    The Secret to a Good Joke Is Silence

    You’ve had this happen: you tell a story you know is funny, you get to the good part, and … nothing. Somebody smiles politely. And you replay it later thinking the joke was fine, the wording was fine, so what went wrong?

    A group of researchers just spent 86 hours listening to professional stand-up comedians to answer that question, and what they found is a little uncomfortable if you’re a words person. The thing that separated the sets that killed from the sets that died wasn’t the cleverness of the material. It was the silence. Specifically, the pause right before the punchline.

    I’ve played a lot of comic roles over the years — Bottom in A Midsummer Night’s Dream, Dogberry, Nathan Detroit in Guys and Dolls — and the thing you learn on stage fast is that the laugh almost never comes from the funniest word. It comes from the beat of nothing you leave in front of it. But if you’d asked me to prove that, I couldn’t have. It was a feeling. This study is the first time I’ve seen somebody put a number on the feeling.

    What the researchers actually did

    The work comes from Yuxi Ma, Yongqian Peng, and their colleagues at Peking University, and I like that they named the paper after the cliché: Timing is Everything.

    They pulled together 828 professional stand-up sets from three big Chinese comedy competition shows that aired between 2017 and 2025 — about 86 hours of material. The nice thing about competition shows is that every performance already comes with an audience appreciation score, so the researchers weren’t sitting around arguing about what was funny. They had the crowd’s verdict built into the data.

    Then they broke each performance into two kinds of measurements. One set was about content: how surprising was each line given what came before it, how big was the jump from setup to punchline. The other set was about timing: how long were the pauses, how much did the pauses vary, how fast was the comedian talking.

    Then the question was simple. When you try to predict how hard an audience responded, which measurements do the work?

    Timing won, and it wasn’t close

    Average pause duration and the variability of those pauses were the two strongest predictors of audience appreciation in the whole dataset. Both of them beat every content measure the researchers looked at. Pause length alone correlated with audience votes at r = 0.36, which for messy real-world behavioral data is a solid signal.

    Here’s the detail I keep coming back to, though. Speaking rate mattered too, and it ran in the direction most of us would guess wrong. Slower delivery was associated with better audience response. The comedians who took their time did better.

    That makes sense once you think about what a punchline needs. A punchline needs something to knock over. When you slow down, you’re giving the audience’s brain time to build the expectation you’re about to demolish. Rush the setup and there’s nothing standing there to hit.

    Why silence does so much of the work

    To see why the pause matters, you have to look at what your mind is doing while it listens to a joke.

    When a comedian sets something up, you quietly start building a prediction about where this is going. If you’ve taken a psych course you’ve met Jean Piaget, and this is his idea of assimilation — taking new information and fitting it into a mental framework you already have. That’s what a good setup does. Every line invites you to fill in the picture and assume you know the destination.

    Then the punchline blows the picture up. The thing you assumed no longer fits, and your brain has to build a new one on the spot. Piaget had a word for that too: accommodation, changing your framework because the new information won’t go into the old one.

    So a joke, looked at closely, is a tiny controlled crash of your own prediction followed by a very fast repair. Setup, assimilation. Punchline, accommodation. That whiplash is a good chunk of what makes you laugh.

    The researchers built a small example in the paper to show the shape of it, and I want to walk through it because it makes the whole thing click. I should say up front that this is a joke they invented themselves to illustrate the mechanism — the real bits from the study were all in Chinese, and the researchers measured the timing rather than publishing the material. But here’s theirs.

    Imagine a comedian says: I’m a psychology professor. I study what drives human behavior. I wrote a book on reverse psychology.

    And then — this is the part that matters — a pause. A beat longer than you were expecting.

    Don’t buy it. Seriously, do not read it.

    Two things just broke at once. The meaning broke, because you expected an author to promote his book and instead he told you to skip it. That’s the gag. But the rhythm broke too, and the rhythm is what the study is really about. The setup got you into a steady beat, the silence stretched a little too long, and that stretch is what set you up for the turn. Take the pause out, rush straight to don’t buy it, and the whole thing goes flat. The joke lives in the gap.

    There’s a memory angle here as well. That extra half-second of silence gives your brain time to fully encode the setup — encoding being the first step of memory, where information gets registered well enough to actually use. The better you’ve encoded the setup, the harder the twist violates it, and the bigger the payoff. And that payoff runs partly on dopamine, which is tied not only to reward but to the anticipation of reward. The setup builds the anticipation. The pause stretches it. The punchline pays it off.

    The difference between the pros and the rest of us

    Now here’s the finding that really got me.

    Both the great comedians and the mediocre ones do the same instinctive thing: they stretch the pause before a big laugh line. Across the whole dataset, pauses before high-surprise content ran about 35.6% longer than pauses before ordinary lines. Everybody feels this.

    But the expert performers stretched their pauses by about 41.2%. The weaker performers stretched theirs by only about 27.4%.

    Same instinct. Different nerve. The pros simply trust the silence more. They’re willing to let it sit there a little longer, and that willingness turns out to be a big piece of what makes them pros.

    Which is a hopeful result, honestly. It means comic timing isn’t a gift you either got or didn’t. It’s a skill — a coupling of what you say and when you say it — and you can work on it on purpose. That matches what I’ve watched in community theatre for years. The actors with the best timing aren’t the ones handed the funniest lines. They’re the ones brave enough to wait.

    What to do with this

    You don’t have to be a comedian for this to be useful. Telling a story at dinner, giving a toast, teaching a class, landing a point in a meeting — same rule.

    Resist the urge to rush your best line. We rush when we’re nervous, and we step on our own punchlines because the silence feels like failure. It isn’t. That silence is you loading the spring.

    So: set the idea up clearly, give people enough to build an expectation, and then right before the payoff, stop. Let the pause run one beat longer than feels comfortable. The discomfort you’re feeling is exactly the tension building on the other side, and when you do deliver, it lands harder.

    Try it once this week and watch what happens.

    Psychology Terms in This Article

    Assimilation: Taking in new information by fitting it into a mental framework you already hold. In this research, the setup of a joke works by assimilation — each line lets you slot the story into a familiar pattern and quietly predict where it’s heading, which is what gives the punchline something to violate.

    Accommodation: Changing your mental framework because new information won’t fit inside the old one. The punchline forces accommodation, and the researchers’ Dual Prediction Violation framework treats that forced rebuild — of both meaning and rhythm — as the engine of the laugh.

    Encoding: The first stage of memory, in which information is registered well enough to be stored and used. The study’s central finding, that longer pauses predict stronger audience response, has an encoding explanation: the silence buys your brain time to lock the setup in, and a well-encoded setup is a more satisfying thing to have overturned.

    Dopamine: A neurotransmitter tied to reward and, importantly, to the anticipation of reward. The pause before the punchline is anticipation being stretched out, which is why a delayed payoff can feel better than an immediate one — and why the slower comedians in this dataset did better than the fast ones.

    Speech rate and pause variability: The timing measures the researchers used — how quickly a performer speaks and how much the length of their silences fluctuates. Both outperformed every measure of the joke’s content in predicting how much the audience appreciated the set.

    Reference

    Ma, Y., Peng, Y., Lyu, J., Zhang, C., & Zhu, Y. (2026). Timing is everything: Temporal scaffolding of semantic surprise in humor. arXiv.

  • Why People Step Out of the Plane — and Go Back Up the Next Day

    Why People Step Out of the Plane — and Go Back Up the Next Day

    Picture standing in the open door of a plane, wind roaring, the ground a long way down. Almost every part of you is shouting one thing: do not do this. Some people hear that voice, nod, and jump anyway. And here’s the part that really gets me — after a terrible accident, some of them go back up the very next day. Why?

    That question came roaring back for me after a recent New York Times feature by Kurt Streeter and Nicholas Bogel-Burroughs, which opened on a single brutal weekend: a skydiving plane crash in Missouri, a fatal BASE jump near Moab, and a rope jump in Brazil where the crew forgot to clip the harness. Strip away the details and the victims all faced the same thing — a brain built to keep them safe, screaming the obvious — and each went anyway.

    I’ve actually talked about the people who do this kind of thing before. A while back I interviewed Dr. Kenneth Carter, a psychology professor at the Oxford College of Emory University and the author of the book Buzz: Inside the Minds of Thrill-Seekers, Daredevils, and Adrenaline Junkies. He studies exactly this — and the same New York Times piece quotes him too.

    The first thing Carter told me is that “adrenaline junkie” mostly gets it wrong. The trait at the center of this is sensation seeking — the pull toward novel, varied, and intense experiences, and a willingness to take risks to get them. It traces back to Marvin Zuckerman, who discovered it almost by accident while running sensory-deprivation studies. Some people sat for hours in a quiet, blank room and felt fine; others couldn’t last minutes. No test at the time could predict who was who, so Zuckerman built one.

    Here’s the piece most people miss: high sensation seekers don’t feel the same panic you and I would. Carter’s work shows they tend to run on a different chemistry — less cortisol, the stress hormone, and more dopamine, the brain’s reward and motivation signal. So the moment that would flood you with dread becomes, for them, a moment of clarity. Time stretches, the noise drops away, and they describe picking out every crack in the rock as they fall past.

    Zuckerman’s scale breaks the trait into four parts, and I think this is the most useful way to understand it. The first two tell you what kind of seeker someone is: thrill and adventure seeking (the skydiving, the wingsuits) and experience seeking (fearless eating, far-flung travel, even striking up debates with strangers). The last two tell you how much trouble they might find: disinhibition, the tendency to leap before looking, and boredom susceptibility, how badly they need stimulation. As Carter put it to me, the danger usually isn’t the activity itself — it’s doing it impulsively. “It’s good to look before you leap,” he said, “if you’re leaping off a bridge.”

    A couple of things surprised me. Sensation seeking lines up with openness — the Big Five trait about curiosity and appetite for the new — but it is not the same as extraversion. Plenty of high seekers are quiet introverts. And I’ll admit I have skin in this game: I took Carter’s scale and scored a 13, which is low (he scored even lower, an 8). The few points I earned all came from experience seeking — I like exploring strange places. I’m also someone who gets a real jolt of nerves before stepping on stage for community theater, then loves it. Not the same as jumping off a cliff, but maybe a cousin of it.

    So what do you do with this? Two things. If you love someone who’s wired this way, understanding the trait helps — it isn’t recklessness for its own sake, and a calmer partner often becomes the “anchor” who keeps the risk in check. And if you’re the seeker, Carter’s warning is the practical gold: the trait isn’t the problem, impulsivity is. Build in the pause. Look before you leap.

    If you’re studying psychology, scroll down — I’ve pulled out the key concepts this research illustrates, in plain language you can use for an exam.

    Psychology Terms in This Article

    Sensation seeking — A personality trait describing how strongly someone is drawn to novel, varied, and intense experiences, and how much risk they’ll accept to have them. Zuckerman’s scale runs from about 8 to 40, with most people near 25; the extreme athletes in Carter’s work often score in the high 30s, which is why the same jump reads as terror to one person and joy to another.

    Dopamine — A neurotransmitter tied to reward, motivation, and the anticipation of something good. High sensation seekers appear to get a bigger dopamine payoff (with less of the stress hormone cortisol) from risky, novel situations, which helps explain why danger can feel energizing rather than frightening to them.

    Openness — One of the Big Five personality traits, marked by curiosity, imagination, and willingness to try new things. Sensation seeking correlates with openness, which is why the experience-seeking side of the trait shows up in adventurous eaters and travelers, not just cliff jumpers.

    Extraversion — The Big Five trait covering sociability and seeking stimulation from other people. The surprising research point is that sensation seeking is not reliably linked to extraversion — many high seekers are introverts — so the two traits should not be confused on an exam.

    Trait theory — The approach to personality that explains behavior through stable characteristics that show up across situations and over time. Sensation seeking is a textbook example: it’s measurable, fairly consistent within a person, and even shifts predictably with age, peaking in adolescence and easing as we get older.

    Yerkes-Dodson law — The principle that performance improves as arousal rises, but only up to a point, after which it drops — an inverted-U, with the ideal level differing by person and task. It offers a neat way to picture sensation seekers: they may need a much higher level of arousal to hit their personal sweet spot than the rest of us do.

    References