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Boundary Extension in Face Processing.

Olesya Blazhenkova1

  • 1Faculty of Arts and Social Sciences, Sabancı University, Istanbul, Turkey.

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Summary
This summary is machine-generated.

Boundary extension, a false memory phenomenon, occurs in face perception. This study found boundary extension in faces and linked it to emotional ability and object imagery, not spatial imagery.

Keywords:
boundary extensionemotionface processingfalse memory errorsindividual differencesobject and spatial imagery

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Boundary extension is a known memory error where perceived scenes are recalled as wider than they were.
  • Previous research has primarily focused on boundary extension in natural scenes, not non-scene objects like faces.

Purpose of the Study:

  • To investigate boundary extension in cropped face images.
  • To examine the influence of short-term versus long-term memory conditions on this phenomenon.
  • To explore the relationship between boundary extension, emotional ability, and imagery.

Main Methods:

  • Participants viewed cropped face images (forehead or chin) under short-term or long-term memory conditions.
  • Face recognition was tested using forced-choice selections with varying degrees of boundary extension/restriction.
  • Eye-tracking and performance data were collected.

Main Results:

  • Boundary extension was observed in both short-term and long-term memory conditions for faces.
  • Evidence of asymmetric boundary extension was found, with greater errors for forehead than chin crops in the short-term condition.
  • Individual differences in emotional ability and object imagery, but not spatial imagery, correlated with boundary extension in face processing.

Conclusions:

  • Boundary extension is not limited to natural scenes and applies to face perception.
  • Memory duration and specific facial features (forehead vs. chin) influence the degree of boundary extension.
  • Emotional intelligence and object imagery may play a role in how boundary extension manifests in face memory.