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Study 04 · Semester 1 · Know your brain · Teen study

Belonging

Why does being left out hurt so much?

A plan you heard about afterwards. A group chat that went quiet. A table with no room for you. Being left out can sting far more than it “should”. Today: what happened when scientists left people out on purpose — and why almost everyone gets one number about belonging wrong. Probably including you.

Narrated by an AI voice. The words and the science are checked by the Mama Hala team.

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  1. Study 04 · The Resilience Lab — Belonging
  2. Why does being left out hurt so much?
  3. Williams et al., 2000: Left out of an online ball game by “players” who were really a computer, people felt worse — and less like they belonged.
  4. 120 — Cyberball studies pooled — the effect of being left out was large
  5. “Rejection is exactly the same as physical pain.” → Overlapping brain areas — different patterns. Its own kind of hurt.
  6. Students guessed 38% of their classmates had felt very lonely on a weekend night that month. Actually: 56%.
  7. Walton & Cohen, 2011: One hour of older students’ stories — “this worry is common, and it fades” — lifted African-American students’ grades over three years.
  8. Walton et al., 2023: Tested with 26,911 students at 22 colleges: more finished their first year — but only where their group had real chances to belong.
  9. Everyone is on the outside sometimes. You are not the only one.
  10. The sting is real. So is the company — more than you think.

Make a prediction

In an online experiment, people played a simple ball-tossing game with two other “players” — really a computer. Some kept getting the ball; others were left out, and the ball stopped coming their way. What do you think happened to the left-out players?

Committing to a guess before you learn the answer helps you remember the answer.

In an online experiment, people played a simple ball-tossing game with two other “players” — really a computer. Some kept getting the ball; others were left out, and the ball stopped coming their way. What do you think happened to the left-out players?
Not sureVery sure

A need, not a luxury

If being left out stings more than you think it should, nothing is wrong with you. Reviewing the evidence, two researchers argued that the need to belong — frequent, positive contact inside lasting relationships — is a fundamental human motivation, not a luxury. People form bonds easily and resist losing them, and a lack of close ties is linked with worse health and well-being (Baumeister & Leary, 1995).

To study the sting safely, researchers invented Cyberball: you and two other “players” toss a ball on screen, and after the first couple of throws the other two stop throwing to you. They are really a computer program, and the game almost always lasts under five minutes. By 2015, Cyberball had appeared in at least 200 published papers (Hartgerink et al., 2015).

Evidence

The evidence: left out in the lab

One classic experiment, one study of 120 studies, and one question about teens that is still open.

Journal of Personality and Social Psychology2000Experiment

Cyberostracism: Effects of being ignored over the Internet

Williams, K. D., Cheung, C. K. T., & Choi, W.

The question

Does being ignored by strangers online, in a simple game, actually hurt?

What they did

1,486 people from 62 countries played an online ball-tossing game with two computer-controlled “players”. Some got the ball often; others were left out to different degrees.

What they found

The more people were left out, the worse they felt, the less control they felt and the more their belonging dropped. In a second study, people who had been left out were more likely to go along with a group on a later task.

What this does NOT mean

It doesn’t mean you’re fragile. It means the alarm for being left out is sensitive enough to go off with strangers, online, in a cartoon game.

Found again in later studies

1,486 people online from 62 countries, plus a second study. Cyberball has since appeared in at least 200 published papers, and the effect keeps showing up (next card).

Read the paper
PLoS ONE2015Meta-analysis

The ordinal effects of ostracism: A meta-analysis of 120 Cyberball studies

Hartgerink, C. H. J., van Beest, I., Wicherts, J. M., & Williams, K. D.

The question

Across many Cyberball studies, how big is the effect of being left out — and who does it affect?

What they did

Researchers pooled 120 Cyberball studies with 11,869 participants, comparing players who were left out with players who were included.

What they found

Right after the game, the two groups differed by about 1.36 standard deviations — a large effect. A few minutes later the gap was smaller, but still there. The effect didn’t depend on the samples’ age, gender mix or country.

What this does NOT mean

A large effect in the lab doesn’t mean the feeling lasts for days. It means the first sting is strong and reliable.

Summary of many studies

120 studies and 11,869 people — mostly young adults: study samples averaged about 20.5 years old. Strong evidence that the effect is real. It can’t say how long the sting lasts in daily life: only two of the 120 games ran longer than five minutes.

Read the paper
Brain and Cognition2010Experiment

Social brain development and the affective consequences of ostracism in adolescence

Sebastian, C., Viding, E., Williams, K. D., & Blakemore, S.-J.

The question

Do teenagers feel being left out more than adults do?

What they did

Researchers compared how teenage girls and adult women felt after being left out in Cyberball.

What they found

Being left out had a significantly bigger effect on the teenagers’ feelings than on the adults’. The researchers suggest the ability to handle that distress is still developing between adolescence and adulthood.

What this does NOT mean

It doesn’t mean teens are too sensitive. It suggests the tools for handling that sting are still developing — a normal part of growing up.

Mixed results when retested

One study, with girls and women only. Pooling 120 Cyberball studies, the average age of a study’s sample didn’t change the effect — but most samples were young adults, and the authors call for more research on age (Hartgerink et al., 2015). So “teens feel it more” is promising, not settled.

Read the paper

The myth

“Being rejected is literally the same as physical pain — your brain can’t tell the difference.”

What the evidence says

The first brain-scan study of being left out, with 13 people, found more activity in a region also active during physical pain — and the more active it was, the more upset people felt (Eisenberger et al., 2003). Headlines ran with “rejection = pain”. Then science did what it does: it checked. Pooling Cyberball scans from 244 people, one team found no clear evidence that exclusion runs on the brain’s physical-pain network (Cacioppo et al., 2013). Another found overlapping areas but different fine-grained patterns: a computer trained to spot physical pain in brain scans could not spot rejection, and the reverse was also true (Woo et al., 2014). Being left out really hurts. It’s its own kind of hurt.

Eisenberger et al., 2003 · Cacioppo et al., 2013 · Woo et al., 2014

Fig. 1 — The belonging gap

First, your guess: what share of university students felt very lonely on a weekend night at least once in the past month? Then watch the bars fill in: what students guessed about their classmates, and what those classmates actually reported. Real numbers from two universities — older students than you, so a strong clue, not a rule.(Jordan et al., 2011)

Everyone else seems fine

Here are the real numbers. At one university, students guessed that 38% of their classmates had felt very lonely on a weekend night in the past month; 56% actually had. At the other, the guess was 42% and the reality 62%. The same pattern held for being sad enough to cry and for feeling overwhelmed by schoolwork or activities (Jordan et al., 2011).

Why does almost everyone guess low? In the same paper, 29% of the bad moments students described happened with no one else around, against 15% of the good moments; and 40% of the bad feelings were deliberately hidden, against 13% of the good ones (Jordan et al., 2011). You see your own whole story — and everyone else’s highlights.

Another study in the paper found the same blind spot: first-year students underestimated how common six common negative experiences were among their peers — by 17.2 percentage points on average — while overestimating how many were out with friends and at parties. In a third study, students who guessed lower were lonelier and less satisfied with life. That was a snapshot, so it can’t show which came first, and the researchers say so (Jordan et al., 2011).

Explain it to your Lab PartnerAI

An AI that asks before it tells. It knows this Study — and only this Study.

In two or three sentences: why do most people underestimate how many others feel left out — and why might that make the sting worse? Try to use the word “hidden”.

Hi — I’m your Lab Partner, an AI here to think with you, not to lecture you. First question: before the figure showed the real numbers, what did you guess — and why do you think almost everyone guesses low?

Lab Partner opens once a parent sets up your family’s Lab.

Start your family Lab to save your work

The worry that you don’t belong

Researchers call one version of this worry belonging uncertainty: “Do people like me really belong here?” It often shows up in new places — a new school, a new country, a new group. The trap is reading every bad moment as a verdict, so one awkward lunch becomes proof you’ll never fit.

In 2011, two researchers tested a one-hour exercise aimed at that trap, with first-year college students. Students read stories from older students whose early worries about belonging improved with time, then reflected on their own experience (Walton & Cohen, 2011; Brady et al., 2020). The message: early struggles are common and temporary, and they come with the move — not with you.

The key step is called saying-is-believing. In later versions, students wrote about how the challenges they expected are common and likely to change, in essays that might be shared with future students (Yeager et al., 2016). Putting a message into your own words, for someone else, helps make it yours. You’ll try it shortly.

Evidence

The evidence: one hour, then 22 colleges

A small, careful trial — then a giant one that showed where the exercise works, and where it doesn’t.

Science2011Randomised trial

A brief social-belonging intervention improves academic and health outcomes of minority students

Walton, G. M., & Cohen, G. L.

The question

Can a one-hour exercise ease the worry that you don’t belong?

What they did

92 first-year students at one university (49 African-American, 43 European-American) were randomly assigned to the belonging exercise — older students’ stories, then the message in their own words — or to control activities, and followed for three years.

What they found

The exercise was expected to help African-American students most — a group facing negative stereotypes on campus — and that’s where the benefits showed up: over three years it raised their grades compared with the control groups and halved the achievement gap. They also reported better health and well-being.

What this does NOT mean

It doesn’t mean one hour fixes everything, or that the worry was “all in their heads”. It means how you read early setbacks can shape what you do next — in a place that gives you a fair chance.

Mixed results when retested

92 students at one university: small, but randomly assigned and followed for three years. Larger trials have found benefits too, but not everywhere (next card). And by the end of college only 8% of the original students accurately remembered the message: it seems to have worked by changing how they read early setbacks, not by being remembered (Brady et al., 2020).

Read the paper
Science2023Randomised trial

Where and with whom does a brief social-belonging intervention promote progress in college?

Walton, G. M., Murphy, M. C., Logel, C., Yeager, D. S., Goyer, J. P., Brady, S. T., et al.

The question

Does the exercise work everywhere, for everyone?

What they did

A large research team randomly assigned 26,911 students at 22 diverse colleges and universities to an online version of the exercise (under 30 minutes) or to a control activity, before college began.

What they found

More students completed their first year as full-time students, especially students from groups that had historically progressed at lower rates. But context mattered: it worked only where students’ groups had real opportunities to belong.

What this does NOT mean

It doesn’t mean “just think differently and you’ll belong”. Where a place doesn’t offer real chances to belong, changing how you read things isn’t enough — and it isn’t your job alone.

Found again in later studies

26,911 students at 22 institutions, randomly assigned. A big test of the earlier findings: it confirmed a benefit for some students and showed clear limits.

Read the paper

Words worth knowing

Ostracism
Being ignored and excluded by others.
Cyberball
An online ball-tossing game that gives people a brief, safe dose of being left out.
Belonging uncertainty
The worry that you, or people like you, might not fit somewhere.
Pluralistic ignorance
When many people privately feel the same thing but each thinks they’re the only one.
Saying-is-believing
Putting a message into your own words for someone else, so it becomes your own.

Three stories from older students

The Lab wrote these stories. Each is a composite — built from experiences many students describe, not from one real person. Read them like the students in the study did: look for what changed, and what helped.

Omar, seventeen — a composite story. When we moved to Canada in ninth grade, I was sure everyone already had their friends. At lunch I scrolled my phone to look busy and decided people here just didn’t like me. In October, a boy in my science group admitted he was lost on the homework too, so we did it together. Later he told me he’d been new the year before and felt exactly the same. It took most of the year. But it changed.

Maya, sixteen — a composite story. In eighth grade my two closest friends drifted into a new group, and I wasn’t really part of it. I spent weeks replaying everything I’d said. What I didn’t know was that one of them felt on the edge of that group too. When I finally asked a girl from art class to do a project with me, it was awkward for about ten minutes. We still sit together. Later I realised lots of people’s friendships shifted that year.

Sara, seventeen — a composite story. My first month at a new school in Abu Dhabi, I felt everyone could tell I didn’t fit: my accent was different, and I missed half the jokes. My mum suggested the debate club, and I almost didn’t go. At the first meeting I said nothing; by the third, someone asked what I thought. Looking back, I read every quiet moment as proof I didn’t belong. Mostly, people were just busy with their own worries.

Try it

Try it: a letter to someone starting out

Now you’re the older student. Write a short letter to a younger student about to start at your school. What do people feel in the first weeks but not say? What helped, even a little? What do you wish someone had told you? It’s private: your letter stays in your notebook unless you choose to share it with your family.

Read it back. Which sentence do you most want a younger student to hear — and is it true for you, too? That’s saying-is-believing. In the studies it was one step in a carefully designed exercise; here it’s a way to see the idea from the inside, not a test of whether it works on you.

What this means for you

First: the sting is real and normal. If computer “players” can lower people’s sense of belonging in a few minutes, being left out by people you know is allowed to hurt.

Second: you are not the only one. Whatever you guess about how many others feel on the outside, the evidence says: guess higher.

Third: belonging can be built in small moves — a message, an invite, a thank-you. Early awkwardness is common and often fades. You’ll test that on yourself this week.

One honest limit: rethinking a situation helps when a place offers real chances to belong. If someone is repeatedly and deliberately leaving you out or putting you down, that isn’t a thinking problem for you to fix. Tell an adult you trust.

Experiment

Your field experiment

Your field experiment · 5 days

Five small connections

HypothesisIf I make one small act of connection each day, then on those days my sense of belonging may be a little higher — and the acts may go better than I expect.

Each day, try one small, low-pressure act of connection: a short message to someone you haven’t talked to in a while, an invite to sit together, or a specific thank-you. Only what feels comfortable — a skipped day is data too. No confronting anyone, no sharing anything private. Each evening, answer three quick questions: about 20 seconds.

Start your family Lab to save your work

The Resilience Lab
What this can — and can’t — tell you

Five days can show a pattern in you, not a rule for everyone. You chose the days and the people, you know what you’re hoping for, and belonging moves with things you don’t control. That’s why researchers use many people, random assignment and comparison groups. Still, five days can test one guess: does reaching out go better than you predicted?

Recall

Recall

Pulling an answer out of memory is one of the best-tested ways to learn it. Guess if you have to.

  1. 01In the first big Cyberball experiment, what happened as people were left out more?
  2. 02Students guessed how many classmates had felt very lonely on a weekend night in the past month. Compared with what classmates reported, the guesses were…
  3. 03What did later, bigger analyses find about the idea that rejection is “the same” as physical pain?
  4. 04When the belonging exercise was tested with 26,911 students at 22 colleges, what did researchers find?
  5. 05From Study 1: in the stoplight driving study, what happened when teens’ friends were watching?

Notebook

Lab notebook

Private. Your family sees that you wrote, never what you wrote.

Family card · Study 04

Everyone is on the outside sometimes

Teen

Being left out stings, even in a short game with strangers — and most people underestimate how many others feel it too.

Parent

Teens who feel connected at home and at school tend to do better, then and years later. Connection is built in small, ordinary moments.

Ask each other

  • 01Tell about a time you felt you didn’t fit. What changed — and how long did it take?
  • 02Where do you each feel you belong most? What do people there do?
  • 03What’s something you used to think only you felt?

Try together this week

This week, each of you share one time you felt you didn’t fit — and what changed. Then each of you make one small connection with someone outside the family, and compare notes at the weekend.

Start your family Lab to save your work

The Resilience Lab

References

  1. Cacioppo, S., Frum, C., Asp, E., Weiss, R. M., Lewis, J. W., & Cacioppo, J. T. (2013). A quantitative meta-analysis of functional imaging studies of social rejection. Scientific Reports, 3, 2027. doi:10.1038/srep02027✓ PubMed
  2. Eisenberger, N. I., Lieberman, M. D., & Williams, K. D. (2003). Does rejection hurt? An fMRI study of social exclusion. Science, 302(5643), 290–292. doi:10.1126/science.1089134✓ PubMed
  3. Hartgerink, C. H. J., van Beest, I., Wicherts, J. M., & Williams, K. D. (2015). The ordinal effects of ostracism: A meta-analysis of 120 Cyberball studies. PLoS ONE, 10(5), e0127002. doi:10.1371/journal.pone.0127002✓ PubMed
  4. Jordan, A. H., Monin, B., Dweck, C. S., Lovett, B. J., John, O. P., & Gross, J. J. (2011). Misery has more company than people think: Underestimating the prevalence of others’ negative emotions. Personality and Social Psychology Bulletin, 37(1), 120–135. doi:10.1177/0146167210390822✓ PubMed
  5. Sebastian, C., Viding, E., Williams, K. D., & Blakemore, S.-J. (2010). Social brain development and the affective consequences of ostracism in adolescence. Brain and Cognition, 72(1), 134–145. doi:10.1016/j.bandc.2009.06.008✓ PubMed
  6. Walton, G. M., & Cohen, G. L. (2011). A brief social-belonging intervention improves academic and health outcomes of minority students. Science, 331(6023), 1447–1451. doi:10.1126/science.1198364✓ PubMed
  7. Walton, G. M., Murphy, M. C., Logel, C., Yeager, D. S., Goyer, J. P., Brady, S. T., et al. (2023). Where and with whom does a brief social-belonging intervention promote progress in college?. Science, 380(6644), 499–505. doi:10.1126/science.ade4420✓ PubMed
  8. Williams, K. D., Cheung, C. K. T., & Choi, W. (2000). Cyberostracism: Effects of being ignored over the Internet. Journal of Personality and Social Psychology, 79(5), 748–762. doi:10.1037/0022-3514.79.5.748✓ PubMed
  9. Woo, C.-W., Koban, L., Kross, E., Lindquist, M. A., Banich, M. T., Ruzic, L., Andrews-Hanna, J. R., & Wager, T. D. (2014). Separate neural representations for physical pain and social rejection. Nature Communications, 5, 5380. doi:10.1038/ncomms6380✓ PubMed