In a study requiring them to write out 'door' 30 times in 60 seconds, 68 percent of participants began to doubt that 'door' was a real word.
You’ve probably experienced repeating a word so many times that it doesn’t sound like a word, but have you ever considered that you could repeat a word so many times that you don’t believe it’s a word? Chris Moulin, of Leeds University, asked 92 volunteers to write out “door” 30 times in 60 seconds. Around 68% of participants began to show symptoms of ‘jamais vu,’ such as the doubt that “door” was even a real word.
Jamais vu is the phenomenon of recognizing a situation, but still feeling that it is unfamiliar. Dr. Moulin believes that a similar brain fatigue underlies the reason some schizophrenia patients believe that a familiar person has been replaced by an imposter.