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The science of talking to strangers

For more than a decade, psychologists have asked people to talk to someone they have never met. The same two findings keep coming back. We badly underestimate how much the other person wants to talk. And the moment we hear their voice, they become more human to us.

We decide who a stranger is from their face, their clothes, their profile, and then we stop listening. The research below keeps finding what is left when you take that away: a person, worth hearing.

One · Chicago · 2014

Mistakenly seeking solitude

A quiet train carriage, and a quiet mistake.

Watch a morning carriage fill up and you will see a wordless agreement take hold: headphones in, eyes down, nobody speaks. In 2014, behavioral scientists Nicholas Epley and Juliana Schroeder asked what that silence was costing, in a series of nine experiments that began on Chicago-area commuter trains.1

Commuters were handed one of three mornings at random. Connect: start a conversation with the stranger near you. Solitude: keep to yourself and enjoy the quiet. Control: commute as you normally would. The surveys came back by mail.

Before you see what came back, place your bet.

Your prediction

Compared with sitting quietly, talking to a stranger would make your ride feel…

Much worseMuch better

About the same, you reckon

How positive the commute felt, in effect sizes

ExpectationReality

Commuters asked to forecast these mornings got the direction wrong, not just the size: they expected solitude to win (d = 0.41). The people who actually talked had the most positive commutes of all three groups, beating solitude by d = 0.63, and reported getting no less done.1

14.2
minutes, the average conversation
5.1
out of 6, how pleasant it was
0
conversations described as truly negative

Human beings are social animals. Those who misunderstand the consequences of social interactions may not, in at least some contexts, be social enough for their own well-being.

Epley & Schroeder · Journal of Experimental Psychology: General, 2014

Two · The same tracks

They wanted to talk, too

The silence is not a preference. It is a misreading.

Why do we get it so wrong? Epley and Schroeder found the engine of the mistake. Commuters rated themselves as more interested in talking than they believed the people around them were.1 Everyone in the carriage is quietly assuming everyone else would rather be left alone.

Your estimate

Picture 100 commuters. Someone tries to start a conversation with each of them. How many go along with it?

0 of 100100 of 100

You guess 50 of 100

100 of 100who tried, talked

Commuters predicted that fewer than 47 in 100 people would be willing to talk. In reality, everyone who returned a survey reported talking with the person they approached, and not a single person reported being rebuffed. The only riders who could not follow the instructions were seven who had nobody sit next to them.1

Commuters appeared to think that talking to a stranger posed a meaningful risk of social rejection. As far as we can tell, it posed no risk at all.

Epley & Schroeder, 2014
Being listened to feels good too. In a waiting-room version of the experiment, the people who were talked to enjoyed it just as much as the people told to start the conversation. The authors’ phrase: the pleasure of connection seems contagious.1

Three · Yale · 2018

The liking gap

You are a harsher judge of yourself than the person you just talked to.

So the conversation happens. It goes fine, usually better than fine. And then the replay begins. Did I talk too much? Why did I tell that story?

Erica Boothby and colleagues measured the replay. After first conversations between strangers, each person answered two questions: how much do you like your partner, and how much do you think your partner likes you?2

After a first conversation · liking, 1 to 7

How much people liked their partner5.82
How much they thought their partner liked them5.17
The liking gap · you are liked more than you know

Trained observers watching recordings of the same conversations could read how much people liked each other. The signals were there. The people inside the conversation were too busy judging themselves to hear them.2 The shyer the person, the wider the gap.

It is stubborn, too. Among first-year students assigned to share a dorm suite at Yale, the gap held at every check-in across the year until the last one, in May.2

  • SEPgap
  • OCTgap
  • DECgap
  • FEBgap
  • MAYclosed

After people have conversations, they are liked more than they know.

Boothby, Cooney, Sandstrom & Clark · Psychological Science, 2018

Four · 2021

Overly shallow

Fine, you will talk. But you will keep it safe.

Michael Kardas, Amit Kumar and Nicholas Epley ran twelve experiments with more than 1,800 people, pairing them, mostly strangers, for shallow or deep conversations.3 These are questions from the study. Someone you have never met sits down across from you. Which conversation would you rather have?

  • What people expectedThat deep questions would be awkward, and that a stranger would not much care about their answers.
  • What happenedConversations felt less awkward, more connecting and more enjoyable than expected, and the gap was larger for the deep ones.
  • Having tried bothPeople who had one deep and one shallow conversation expected to prefer the shallow one, and ended up preferring the deep one.
  • The fixSimply telling people these results made them choose deeper questions with a stranger.

Summarised from the paper and the American Psychological Association’s release on it.3

The barrier was in the forecast. People imagined that opening up would be met with blank stares. Strangers listened, and gave something real back.


Five · 2017

The humanizing voice

The hardest stranger to hear is the one who disagrees with you.

Juliana Schroeder, Michael Kardas and Nicholas Epley recorded people explaining their views on divisive topics, then showed those explanations to people who either agreed or disagreed. Some evaluators read a transcript. Some listened to the audio. Some watched the video. Same words every time.4

Your pick

Someone is about to explain a view you strongly disagree with. How would you rather take it in?

Experiment 1, evaluators who disagreed with the speaker (297 evaluators in total). Ratings of uniquely human mental traits, such as seeming “rational and logical” and “refined and cultured”, on a scale from −3 to +3 against the average person; bars start at zero. Heard versus read: d = 0.55. Heard and seen versus heard only: no significant difference (d = 0.18).4

Reading the words of someone you disagree with makes it easy to imagine a shallow mind behind them. Hearing the same words, in their own voice, makes them seem more thoughtful, more rational, more human. And adding their face on top of their voice did not meaningfully change the result.4 The voice was doing the work.

In a final experiment, the researchers looked for what in a voice carries that humanity. Two cues stood out: intonation, the rise and fall of pitch, and pauses.4 The small sounds of someone thinking.

The same sentence, typed and spoken

PAUSE PAUSE I see why you think that… but here is where I land.
Illustration, not a recording

The tendency to denigrate the minds of the opposition may be tempered by giving them, quite literally, a voice.

Schroeder, Kardas & Epley · Psychological Science, 2017

Six · 2021

It’s surprisingly nice to hear you

When we finally reach out, we type.

Amit Kumar and Nicholas Epley asked people to reconnect with an old friend.5 Beforehand, they expected a phone call to feel more awkward than an email, and most said they would rather write.

Then the researchers assigned them, at random, to call or to email. The people who heard a voice reported a stronger bond than those who typed (d = 0.40), and no more awkwardness. Both groups spent about the same time on it, around 17 minutes.5 In the lab, strangers who chatted over voice or video felt more connected than strangers who chatted by text, again with no extra awkwardness.5

The same pattern shows up wherever researchers have looked. A brief real exchange with a barista lifted people’s mood more than being efficient did.7 On days students talked with more classmates than usual, they were happier and felt they belonged more.8 And in London, where silence on the train is close to a rule, commuters assigned to talk had a more positive journey and learned more.6

Our fears

Overblown

Across seven studies and 2,304 people, the fears people hold before talking to a stranger turned out to be larger than what happened. Conversations go better than expected.9

With practice

It gets easier

After a week-long game of finding and talking to strangers, people feared rejection less, trusted their own conversation skills more, and their expectations grew more accurate by the day.10

Every gap in this story points the same way. The stranger is more willing than you think,1 likes you more than you think,2 cares more about your answers than you think,3 and seems more human the moment you hear them.4 Hear the person, not the profile.

Mindfuse

The research says: say hello. Out loud.

Mindfuse is a quiet place to do exactly that: an anonymous one-to-one voice call with a real person somewhere in the world. No video, no profiles, no bots. Every day at 17:00 UTC, the Daily Fuse opens one shared moment for everyone.

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Sources

Every number above comes from these peer-reviewed papers.

  1. Epley, N., & Schroeder, J. (2014). Mistakenly seeking solitude. Journal of Experimental Psychology: General, 143(5), 1980–1999. doi:10.1037/a0037323
  2. Boothby, E. J., Cooney, G., Sandstrom, G. M., & Clark, M. S. (2018). The liking gap in conversations: Do people like us more than we think? Psychological Science, 29(11), 1742–1756. doi:10.1177/0956797618783714
  3. Kardas, M., Kumar, A., & Epley, N. (2022, online 2021). Overly shallow? Miscalibrated expectations create a barrier to deeper conversation. Journal of Personality and Social Psychology, 122(3), 367–398. doi:10.1037/pspa0000281. Example questions as quoted in the APA press release.
  4. Schroeder, J., Kardas, M., & Epley, N. (2017). The humanizing voice: Speech reveals, and text conceals, a more thoughtful mind in the midst of disagreement. Psychological Science, 28(12), 1745–1762. doi:10.1177/0956797617713798
  5. Kumar, A., & Epley, N. (2021). It’s surprisingly nice to hear you: Misunderstanding the impact of communication media can lead to suboptimal choices of how to connect with others. Journal of Experimental Psychology: General, 150(3), 595–607. doi:10.1037/xge0000962
  6. Schroeder, J., Lyons, D., & Epley, N. (2022). Hello, stranger? Pleasant conversations are preceded by concerns about starting one. Journal of Experimental Psychology: General, 151(5), 1141–1153. doi:10.1037/xge0001118
  7. Sandstrom, G. M., & Dunn, E. W. (2014). Is efficiency overrated? Minimal social interactions lead to belonging and positive affect. Social Psychological and Personality Science, 5(4), 437–442. doi:10.1177/1948550613502990
  8. Sandstrom, G. M., & Dunn, E. W. (2014). Social interactions and well-being: The surprising power of weak ties. Personality and Social Psychology Bulletin, 40(7), 910–922. doi:10.1177/0146167214529799
  9. Sandstrom, G. M., & Boothby, E. J. (2021). Why do people avoid talking to strangers? A mini meta-analysis of predicted fears and actual experiences talking to a stranger. Self and Identity, 20(1), 47–71. doi:10.1080/15298868.2020.1816568
  10. Sandstrom, G. M., Boothby, E. J., & Cooney, G. (2022). Talking to strangers: A week-long intervention reduces psychological barriers to social connection. Journal of Experimental Social Psychology, 102, 104356. doi:10.1016/j.jesp.2022.104356

Effect sizes are Cohen’s d as reported by the authors. The sentence on the intonation figure is ours, drawn to show the idea; it is not data. Nothing was rounded in our favour.