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Categorical perception of familiar objects.

Fiona N Newell1, Heinrich H Bülthoff

  • 1Department of Psychology, Aras an Phairsaigh, University of Dublin, Trinity College, Dublin 2, Ireland. fiona.newell@tcd.ie

Cognition
|July 20, 2002
PubMed
Summary

Familiar objects are sometimes perceived categorically, meaning we categorize them into distinct groups. This perceptual categorization is closely linked to how similar the objects appear to each other.

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Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Object Recognition

Background:

  • Categorical perception is a well-established phenomenon for speech sounds and colors.
  • Its application to the perception of familiar, three-dimensional objects remains less explored.
  • Understanding object perception aids in fields like human-computer interaction and artificial intelligence.

Purpose of the Study:

  • To investigate categorical perception in familiar, three-dimensional objects.
  • To determine if viewpoint changes affect categorical perception of objects.
  • To examine the relationship between object similarity and categorical perception.

Main Methods:

  • Created shape continua between 15 object pairs.
  • Participants performed discrimination and classification tasks on morphed object images.
  • Varied object viewpoints and collected similarity ratings.

Main Results:

  • Evidence for categorical perception was found in some, but not all, object pairs.
  • Categorical perception effects generalized across different viewpoints.
  • Higher object similarity correlated with stronger perceptual categorization.

Conclusions:

  • Familiar objects can be perceived categorically.
  • Categorical perception of objects is influenced by inter-object perceptual similarity.
  • Findings contribute to understanding the principles of object recognition and categorization.

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