Case file
Third-Person Effect
- Filed under
- Need To Act Fast
The charge
We tend to believe persuasive messages, misinformation, or manipulation affect other people more than they affect us.
How it operates
This protects our self-image as rational and autonomous, while we infer other people's minds from the outside and assume they are more swayable.
Logged incidents
- Incident 01
A PM worries competitors' dark patterns will fool users but assumes they would never influence their own choices.
- Incident 02
An executive dismisses internal comms testing because 'smart employees won't be swayed like that.'
- Incident 03
An investor thinks hype moves retail traders but not their own judgment.
What to watch for
You may be in it when you describe others as influenceable and yourself as immune. Ask: 'What evidence says I am less persuadable than the average person in this audience?'
Recommended action
Measure actual behavior with pre/post tests or A/B tests, and apply the same influence assumptions to yourself as to others.
Known associates
- Overconfidence EffectPeople's confidence in their judgments often exceeds their actual accuracy, especially for predictions,…
- Social Desirability BiasPeople report attitudes or behaviors that make them look good to others instead of what is most accurate or…
- False Consensus EffectWe overestimate how much other people share our beliefs, preferences, and habits.
- Hard-Easy EffectOn hard tasks we are usually too confident, and on easy tasks we are often not confident enough.
- Lake Wobegon EffectMost people rate themselves as above average on desirable qualities, even when that cannot be true for…
- Dunning-Kruger EffectPeople with low skill in a domain often overestimate their performance because they lack the knowledge needed…
Source of record