Oddly Wired
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memory

Describing a face makes you worse at identifying it.

A 1990 study found that participants who wrote a verbal description of a face were significantly less likely to correctly pick it out of a lineup later.

The process of describing features shifts your brain from holistic facial recognition to a detail-oriented, analytical mode. This verbal interference impairs your ability to access the original, holistic mental image of the face.

Words can distort the memory they attempt to preserve.

Where this comes from

Study
Schooler and Engstler-Schooler, 1990, Cognitive Psychology
What the check found
The 1990 paper by Schooler and Engstler-Schooler is the foundational study for the verbal overshadowing effect in face recognition.
Confidence
Well replicated
memorycognitionface recognition

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.