Your own awkward moment may feel more visible to you
People can overestimate how much others notice their appearance or mistakes. A small stumble during an introduction may occupy your attention long after listeners have moved on. The spotlight effect describes this mismatch, although genuinely noticeable events can still attract substantial attention.
Go deeper
Your perspective contains extra detail
You know exactly where your introduction went wrong because you were monitoring your words and comparing them with what you intended to say. Listeners do not have access to that internal comparison.
The spotlight effect describes a tendency to overestimate how much other people notice features of our appearance or behaviour. Our own experience is especially available to us, making it difficult to judge its prominence from someone else's position.
The effect does not mean nobody notices mistakes or that every concern is unfounded. A major disruption can be conspicuous.
It means personal embarrassment is not a direct measure of audience attention. The event's size in your own experience and its size in someone else's experience can differ.