Mind & EverydayFact
You clearly remember a word that was never said.
Hear "bed, rest, awake, tired, dream" and many people also recall "sleep" – which never appeared. Roediger and McDermott measured about 40 percent false recall of this critical lure in 1995. The brain stores the gist of the list, not the individual words.
Useful: A vivid, confident memory is not evidence that something happened.
Source: en.wikipedia.org