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Mind & EmotionGreekEnglish

Prosopagnosia

/ˌprɑsoʊpæɡˈnoʊʒə/noun

An inability to recognise faces, including familiar ones, despite normal vision.

The Greek roots

πρόσωπον
prósōpon
face, mask
+
ἀ-
a-
not, without
+
γνῶσις
gnôsis
knowledge, recognition

Literally: no knowledge of faces

The story of the word

Joachim Bodamer named the condition in 1947, writing up soldiers with head wounds who could see a face in full detail and still not know whose it was. πρόσωπον began as the thing in front of the eyes, became the face, then the mask an actor wore, then the character behind the mask, and Latin persona followed exactly the same path. So the word for face-blindness has the ancient stage sitting inside it.

How it travelled
Ancient Greek → German scientific coinage → English
First recorded
1947

Same family

agnosiadiagnosisprognosisprosopopoeia

In a sentence

He recognises his colleagues by voice and gait, because prosopagnosia has made faces useless to him.

Developmental prosopagnosia turns out to be far more common than the acquired kind.

Built on the same root

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