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Related Experiment Video

Updated: Jul 19, 2026

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm

Published on: December 24, 2015

Unfamiliar faces are not faces: evidence from a matching task.

Ahmed M Megreya¹, A Mike Burton

¹University of Glasgow, Glasgow, Scotland.

Memory & Cognition

|October 27, 2006

Summary

Matching unfamiliar faces is challenging, with significant individual differences. This study found that how people process familiar faces, especially inverted ones, strongly predicts their ability to match unfamiliar faces.

Area of Science:

Cognitive Psychology
Neuroscience
Human Perception

Background:

Unfamiliar face matching is a difficult perceptual task.
Individual differences in face matching ability are significant but not well understood.
Previous research has explored cognitive predictors like visual short-term memory, but with limited success.

Purpose of the Study:

To investigate the factors contributing to individual differences in unfamiliar face matching.
To explore the relationship between familiar and unfamiliar face processing.
To determine if processing familiar faces, particularly inverted familiar faces, predicts performance on unfamiliar face matching tasks.

Main Methods:

Participants completed unfamiliar face matching tasks.

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Cognitive tests including visual short-term memory, cognitive style, and perceptual speed were administered.

Correlations were analyzed between performance on various face matching tasks and cognitive tests.

Familiar face processing (both upright and inverted) was assessed and correlated with unfamiliar face matching.

Main Results:

Moderate correlations were found between unfamiliar face matching and components of visual short-term memory, cognitive style, and perceptual speed tests.
Very strong correlations emerged between upright unfamiliar face matching and inverted unfamiliar face matching.
Strong correlations were observed between familiar and unfamiliar face processing, but only when familiar faces were presented inverted.

Conclusions:

Unfamiliar face matching performance shows substantial individual variability.
Familiar face processing, particularly when faces are inverted, is a strong predictor of unfamiliar face matching ability.
Unfamiliar faces may be processed for identity using qualitatively different mechanisms compared to familiar faces.