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Related Experiment Video

Updated: Jun 2, 2026

A Method for Investigating Change Blindness in Pigeons (Columba Livia)
06:14

A Method for Investigating Change Blindness in Pigeons (Columba Livia)

Published on: September 7, 2018

Categorization of multidimensional stimuli by pigeons.

Mark E Berg1, Randolph C Grace

  • 1The Richard Stockton College of New Jersey, Department of Psychology, Pomona, NJ 08240, USA. bmark3@gmail.com

Journal of the Experimental Analysis of Behavior
|May 7, 2011
PubMed
Summary

Pigeons can learn visual categories by jointly or selectively controlling responses to stimulus dimensions like frequency and orientation. However, their performance showed systematic deviations, suggesting limitations in current models of category learning.

Keywords:
Gabor patchGeneral Linear Classifiermultidimensional categorizationoptimalitypigeons

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Area of Science:

  • Cognitive Psychology
  • Animal Behavior
  • Neuroscience

Background:

  • Pigeons demonstrate complex cognitive abilities, including visual learning.
  • Understanding how animals categorize stimuli informs theories of perception and decision-making.

Purpose of the Study:

  • To investigate pigeons' ability to learn visual categories under different control conditions.
  • To compare the efficacy of joint versus selective stimulus control in categorization.
  • To evaluate computational models of category learning in pigeons.

Main Methods:

  • Pigeons were trained on a visual category learning task using Gabor patches varying in frequency and orientation.
  • Two conditions were tested: joint control (both dimensions required) and selective control (frequency only).
  • Performance accuracies were recorded, and data were analyzed using the General Linear Classifier (GLC) and unidimensional models.

Main Results:

  • Pigeons achieved high accuracies (85.5% joint, 82% selective) but did not reach optimal performance.
  • The General Linear Classifier (GLC) model better explained performance in the joint control condition.
  • Unidimensional models provided a better fit for the selective control condition.

Conclusions:

  • Pigeons can flexibly shift between joint and selective control of stimulus dimensions based on reinforcement.
  • While the GLC model captures some aspects of joint control, systematic deviations suggest the need for alternative models.
  • This study highlights the nuanced nature of multidimensional category learning in non-human animals.