Participants wearing a t-shirt they were embarassed by
Signifcantly overestimated how many observers would notice it
We believe other people notice our appearance and behaviour more than they actually do
See the full study here
Gilovich, T., Medvec, V. H., & Savitsky, K. (2000). The spotlight effect in social judgment: An egocentric bias in estimates of the salience of one’s own actions and appearance. Journal of Personality and Social Psychology, 78(2), 211–222. https://doi.org/10.1037/0022-3514.78.2.211