Expression Dependence in the Perception of Facial Identity

Research output: Contribution to journalArticle (Academic Journal)

6 Citations (Scopus)
313 Downloads (Pure)

Abstract

We recognise familiar faces irrespective of their expression. This ability, crucial for social interactions, is a fundamental feature of face perception. We ask whether this constancy of facial identity may be compromised by changes in expression. This, in turn, addresses the issue of whether facial identity and expression are processed separately, or interact. Using an identification task, participants learned the identities of two actors from naturalistic (so-called ‘ambient’) face images taken from movies. Training was either with neutral images or their expressive counterparts, perceived expressiveness having been determined experimentally. Expressive training responses were slower and more erroneous than were neutral training responses. When tested with novel images of the actors that varied in expressiveness, neutrally trained participants gave slower and less accurate responses to images of high compared to low expressiveness. These findings clearly demonstrate that facial expressions impede the processing and learning of facial identity. Because this expression-dependence is consistent with a late bifurcation model of face processing, in which changeable facial aspects and identity are coded in a common framework, it suggests that expressions are a part of facial identity representation.
Original languageEnglish
Number of pages15
Journali-Perception
Volume8
Issue number3
DOIs
Publication statusPublished - 1 Jun 2017

Structured keywords

  • Cognitive Science
  • Visual Perception

Keywords

  • Visual perception
  • Face perception
  • Facial identity
  • Facial expressions
  • Expression dependence

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