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Updated: May 30, 2025

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm
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Face age modulates face ensemble coding.

Shenli Peng1, Tianhui Liu1, Yi Yang1

  • 1Department of Psychology, College of Education, Hunan Agricultural University.

Vision Research
|January 26, 2025
PubMed
Summary

Human face perception is influenced by age. Adults show a bias towards recognizing own-age faces, but this shifts towards younger faces, demonstrating a "babyface effect" in ensemble coding.

Keywords:
Babyface effectFace ageFace ensemble perceptionOwn-age bias

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Social Neuroscience

Background:

  • Humans can rapidly perceive average features from groups of stimuli, a process called ensemble perception.
  • While gender and race effects on face ensemble perception are known, age-related impacts are less understood.

Purpose of the Study:

  • To investigate how face age influences the performance of face ensemble coding.
  • To determine if age affects the ability to perceive the average identity of a group of faces.

Main Methods:

  • Adult participants viewed sets of four faces (own-age or other-age).
  • Participants judged if a probe face was present in the preceding set.
  • Experiment 1 used older faces as 'other-age'; Experiment 2 used baby faces as 'other-age'.

Main Results:

  • Participants demonstrated ensemble coding by incorrectly identifying set averages as members.
  • Own-age superiority was observed when 'other-age' faces were older.
  • A 'babyface effect' emerged, with a stronger averaging tendency towards baby faces than own-age faces.

Conclusions:

  • Face ensemble coding performance is modulated by the age of the faces presented.
  • Age biases in face perception, including own-age preference and the babyface effect, influence ensemble coding.