📋 What to expect
What is Prosopagnosia?
Prosopagnosia, often called face blindness, is difficulty recognizing faces, even those of people you know well or have met many times. It exists on a spectrum: some people struggle only with unfamiliar faces in passing, while others cannot reliably recognize close family members without other cues like voice, hairstyle or context.
Why it matters
Developmental prosopagnosia is more common than most people realize, estimated to affect around 2 percent of the population, and it is frequently mistaken for social disinterest, rudeness or poor memory. Many people live for years without a name for the pattern, quietly developing workarounds like relying on voice, clothing or context to identify people.
About this test
The PI20 is a validated 20-item self-report screening tool published by Shah and colleagues (2015) and used in research worldwide. A high score suggests your face recognition may be weaker than average; it is not a diagnosis, and a formal assessment requires objective face-processing tests administered by a specialist.