Oddly Wired
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perception

People notice your mistakes far less than you think.

In a 2000 study, only 23% of observers noticed a student wearing an embarrassing t-shirt, though the wearer predicted 50% would.

Researchers had college students wear a shirt featuring a prominent pop singer before entering a room of peers. While the wearers felt highly conspicuous, the vast majority of people in the room did not even register the shirt.

You are the main character of your own life, but a background extra in everyone else's.

Where this comes from

Study
Gilovich, Medvec, & Savitsky, 2000, Journal of Personality and Social Psychology
What the check found
The numbers precisely match Study 1 of Gilovich, Medvec, & Savitsky (2000) on the spotlight effect, where wearers predicted a median of 50% (mean 46%) would notice, but only 23% (mean 22.78%) actually did.
Confidence
Well replicated
perceptionspotlight effectsocial anxietyself-consciousness

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.