True aphantasia prevalence is 1.5% by scales versus 8.9% self-reports, with deficits in dreams, self-talk, and memory.
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Study of 5,010 US adults. Self-reported aphantasia at 8.9%. Visual imagery scales show 1.5% prevalence. Not all self-reporters exhibit low visual imagery. Aphantasics report lower dream frequencies. They have less self-talk. They show poorer memory performance. Aphantasics prefer written over video instructions for learning new tasks. Both scales and self-identification provide consistent assessment

Psychology Science USA Demographics Health

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