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A Method for Investigating Change Blindness in Pigeons Columba Livia
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A comparison of intradimensional and extradimensional shift learning in pigeons.

G Hall1, S Channell

  • 1Dept. of Psychology, University of York, York Y01 5DD England.

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Pigeons learned new tasks equally well whether the relevant feature changed or stayed the same. This challenges attentional theories predicting difficulty with extradimensional shifts in learning.

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Area of Science:

  • Animal cognition
  • Behavioral neuroscience
  • Learning and memory

Background:

  • Pigeons were trained on simultaneous discrimination tasks involving color and orientation.
  • Stimulus dimensions were either relevant (correlated with reward) or irrelevant.

Purpose of the Study:

  • To investigate how pigeons learn after shifts in relevant stimulus dimensions.
  • To test predictions of attentional theory regarding intradimensional versus extradimensional shifts.

Main Methods:

  • Three experiments involved training pigeons on discriminations.
  • Birds experienced either intradimensional shifts (relevant dimension remained) or extradimensional shifts (irrelevant dimension became relevant).

Main Results:

  • Contrary to attentional theory predictions, pigeons learned both types of shifts with equal ease.
  • Learning speed was not significantly different between intradimensional and extradimensional shift groups.

Conclusions:

  • The results challenge existing attentional theories of learning.
  • Pigeon learning is flexible, not strictly adhering to predictions based on dimensional relevance shifts.