The stories we tell about why things happen, and who or what is responsible.
35 biases · 41 references on this page
Apophenia is our knack for seeing meaningful patterns in things that are actually unrelated - faces in clouds, streaks in coin flips, hidden messages in noise. The connections feel real and significant even when nothing links the dots but chance.
Everyday After wearing the same socks during two wins in a row, a fan becomes quietly convinced the socks decide the game.
We quietly assume other people are more like us than they really are - sharing our values, tastes, and reactions. It saves mental effort, but it means our picture of 'most people' is often just a mirror.
Everyday Someone who loves spicy food orders for the whole table, genuinely surprised when half the group is in tears.
When people build or judge technology, they tend to focus on the machine and forget the humans around it - the habits, fears, and social settings that decide whether the technology actually works in the world.
Everyday A gadget-lover gifts their grandparent a smart speaker, when what the grandparent actually wanted was bigger buttons on the phone.
When solving problems that cross fields, we lean on our home discipline and ignore relevant knowledge from the other domains involved - even when that knowledge is sitting right there.
Everyday A software engineer builds a budgeting app without asking a single accountant how people actually budget.
Our judgments about the world are quietly shaped by the kind of body we have - its senses, size, energy, and capacities. We do not perceive events neutrally; we perceive them as creatures with particular bodies.
Everyday The same hill genuinely looks steeper when you are tired or carrying a heavy backpack.
We judge what a machine can do from what it looks like. A robot with eyes and a face gets credited with understanding and feelings; a boxy one gets underestimated. Either way, form drives our guess about function.
Everyday People say 'thank you' to a cute delivery robot but kick the shapeless vacuum cleaner that does more work.
Named for the cartoon tagline 'knowing is half the battle', this is the mistaken belief that knowing about a bias protects you from it. Mostly it does not - biases run on autopilot underneath our knowledge.
Everyday You know all about the planning fallacy and still promise the report by Friday.
We assume an individual member speaks for their whole group, and that a group's decisions match what its members privately believe - even when a vocal minority or a quirky rule actually decided the outcome.
Everyday Meeting one rude tourist from a country and concluding 'people from there are rude'.
Reading hostility into behavior that is actually ambiguous or innocent. A bumped shoulder, an unanswered message - the biased mind concludes 'that was on purpose'.
Everyday A friend walks past without saying hi (they did not see you), and you spend the afternoon composing a confrontation.
Overestimating how much our actions influence outcomes that are largely chance or other people's doing. Signs of skill - choosing, practicing, being involved - make us feel in control of things we do not control.
Everyday Pressing the crosswalk button five times, certain the light changes faster for you.
Our default reading of any action is 'on purpose'. Judging something as accidental takes an extra mental step, which we often skip - especially when rushed or upset.
Everyday Someone steps on your foot on the bus and your first flash is that they meant it.
The comforting belief that the world is basically fair, so people mostly get what they deserve. Faced with innocent suffering, this belief pushes us to find fault in the victim rather than accept that the world allowed something unfair.
Everyday Hearing about a scam victim and thinking 'well, I would never have fallen for that'.
Because car use is a taken-for-granted norm, people excuse harms from driving that they would condemn from any other source. The same risk gets a shrug when a car causes it and outrage when anything else does.
Everyday 'People should not smoke in places where others have to breathe it' wins broad agreement; swap the smoke for exhaust fumes and the agreement collapses.
The tendency not to really see plants - to treat them as background scenery rather than living things, and to underrate how much life on earth depends on them.
Everyday You remember the dog you passed on your walk, but not one of the two hundred trees.
Excessive optimism that a new invention will spread everywhere, help everyone, and have no downsides worth planning for. The innovation's fans see adoption as inevitable and resistance as ignorance.
Everyday Declaring in 2010 that 3D printers would sit in every home by 2015.
Big events feel like they need big causes. A lone accident toppling something huge seems wrong to our minds, so we hunt for grander explanations - masterminds, plots, destiny.
Everyday Finding 'a virus crossed over at a market' harder to accept than an elaborate plot, because the pandemic was so enormous.
Blaming bad outcomes on an individual's weak character or poor self-control while ignoring the circumstances that shaped their options. It turns social problems into personal moral failings.
Everyday Calling a coworker lazy for missed deadlines, not knowing they are caring for a sick parent at night.
Forgetting that a metric is only a stand-in for the thing you care about, and starting to treat the number itself as the goal. Once that happens, you optimize the measure and lose the mission.
Everyday A call center rewards short calls, so staff rush customers off the line - calls get shorter, service gets worse.
A motivated pull to defend the way things already are - to see existing arrangements as fair, natural, and legitimate, sometimes even when we ourselves are harmed by them.
Everyday 'If this fee were really unfair, someone would have changed it by now.'
The pull to explain things by purpose - what they are 'for' - even for things no one designed. It feels explanatory to say the sun shines 'so that' life can grow, but the sun has no plans.
Everyday Saying 'everything happens for a reason' after a canceled flight, as if delays had intentions.
Trusting a smooth trend to continue, and being blindsided when it breaks. The name comes from the turkey who is fed generously every day - right up until the day before Thanksgiving - and whose confidence peaks at the worst possible moment.
Everyday 'House prices have gone up every year I can remember, so they always will.'
We explain our own behavior by the situation ('I snapped because I was exhausted') but other people's behavior by their character ('she snapped because she is rude'). We star in a story with context; everyone else just has traits.
Everyday 'I cut in because I am late for something important; he cut in because he is a jerk.'
Our blame judgments bend to protect ourselves. The more we can imagine being in someone's shoes, the gentler we judge their role in a mishap - and the more different they seem from us, the more blame we pile on.
Everyday Drivers call a crash 'something that could happen to anyone'; non-drivers call it recklessness.
Memory keeps the camera pointed at us. We recall our own contributions, words, and efforts more vividly than anyone else's, so our share of joint work honestly feels bigger than it was.
Everyday Both partners privately estimate doing 70 percent of the housework.
Researchers tend to find what they expect. Expectations leak into how studies are run, how data are read, and which results get believed and published - usually without anyone intending it.
Everyday A teacher grading a favorite student's essay reads the ambiguous sentences generously.
Seeing ourselves and our projects as rarer and more special than they are - underestimating how many other people share our virtues, skills, or good ideas.
Everyday Regular gym-goers guess that far fewer people exercise than actually do, enjoying the feeling of being the disciplined few.
When explaining other people, we reach for character and skip the circumstances. Behavior that is really produced by pressures, incentives, or roles gets read as revealing who someone deep-down is.
Everyday The cashier who barely greets you is 'cold' - not eight hours into a double shift.
We favor people we count as 'us' - with trust, resources, and the benefit of the doubt - even when the group boundary is meaningless. Teams minutes old, based on nothing, already show it.
Everyday Strangers in your team's jersey get a friendlier read than strangers in the rival's colors.
The conviction that we see the world as it is, while people who disagree must be biased, misinformed, or motivated. Everyone in a dispute can hold this belief at once, and usually does.
Everyday In a family argument, each side sincerely wonders how the other got so brainwashed.
Avoiding information that might hurt - not checking, not opening the letter, not looking - to dodge the bad feeling of knowing. The situation stays exactly as bad; we just stay in the dark about it.
Everyday Not checking your bank balance for the whole week after the holidays.
Sometimes members of lower-status groups absorb the wider culture's rankings and favor a higher-status group over their own - preferring its members, styles, and judgments to their own group's.
Everyday A speaker with a regional accent rates their own accent as less intelligent-sounding than the 'prestige' one.
Other people's expectations of us leak into how they treat us, and their treatment nudges our actual performance. Expected to bloom, people often do; written off, they often wilt.
Everyday A new hire labeled 'high potential' gets more feedback and stretch assignments - and a year later, looks like high potential.
What we expect shapes what we literally notice and remember. Two people can watch the same event and, without either lying, see different events.
Everyday Two parents watch the same youth soccer match and each honestly sees the referee favoring the other team.
Wins are ours; losses had other causes. We take credit for successes and find outside explanations for failures, protecting how we feel at the cost of what we learn.
Everyday 'I aced it because I studied; I failed it because the questions were tricky.'
The fundamental attribution error, scaled up to groups: an outgroup's bad acts get explained by 'what those people are like', while their good acts get explained away as luck, exceptions, or special circumstances.
Everyday 'That driver from the rival city cut me off - typical of them; the one who let me merge was just an exception.'