Déjà vu Fact Sheet
SMU Psychology Professor Alan Brown identified these facts about déjà vu:
- A majority of people experience déjà vu, roughly
two-thirds of the population.
- The frequency of déjà vu decreases with age and
is most common among people from 15 to 25 years old.
- People with higher incomes and more education
have more déjà vu experiences.
- Déjà vu appears to be associated with stress and
- Those who travel have more déjà vu experiences.
- Some people report that déjà vu experiences
appear to repeat prior dreams.
There are no definitive answers for what causes déjà
vu, but Brown narrows this down to four scientifically
- Dual processing: two cognitive processes
momentarily get out of synch
- Neurological: a seizure or disruption in normal
- Memory: a memory that we forgot connects with
part of the present experience
- Attention: an unattended perception is quickly
followed by an attended perception of the same thing
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