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How can a crowd copy a conclusion without seeing its evidence?

A busy restaurant looks promising because other people chose it. But what if they were following the people ahead of them? A crowd can appear to contain many independent judgments even when its members are relying on the same few clues.

3–7 min

Questions you could explore

  • When is following other people a sensible shortcut?
  • How could you tell independent evidence from repeated imitation?

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Psychology

Can an option nobody wants change what people choose?

Choosing between two offers can feel different when a third appears beside them. A decoy is less attractive than one option on the relevant features, but its presence does not reliably change every decision.

5–7 min

Can an option nobody wants change what people choose?

Psychology5–7 minChoosing between two offers can feel different when a third appears beside them. A decoy is less attractive than one option on the relevant features, but its presence does not reliably change every decision.

How can you miss something that is right in front of you?

Psychology3–5 minLooking at a scene does not mean noticing everything in it. When attention is occupied by one task, something plainly visible can go unreported, a pattern called inattentional blindness.

Psychology

Can a question change what someone remembers?

A question can ask for a memory while also suggesting what might have happened. Research on eyewitness reports separates what someone originally saw from information introduced afterward, making wording part of the evidence problem.

3–7 min

Can a question change what someone remembers?

Psychology3–7 minA question can ask for a memory while also suggesting what might have happened. Research on eyewitness reports separates what someone originally saw from information introduced afterward, making wording part of the evidence problem.

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