Demographic and Statistical Information

Assessing the exact demographics of synesthesia is a very difficult task because many people who have it, do not actually know they have it. The reports researchers have on those with synesthesia rely on self selection. Individuals must realize they have the condition and come forward to researchers about their experiences. However, from what is known of synesthetes the following information has been gathered:

  • estimates of 1 in 20 to 1 in 20,000 have some form of synesthesia
  • higher prevalence in females, 6:1 (this number may have to do with the fact that women are more likely to self-disclose than men–more recent sampling has shown a closer to 1:1 ratio)
  • Evidence exists for 35 kinds of synesthesias, but there are up to 50 (theorized) separate forms of synesthesia
  • of those who have synesthesia, 36% claim they have biological relatives who also have the condition



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