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Unexpected discrimination strategy used by pigeons.

L von Fersen1, J Emmerton2, J D Delius1

  • 1Allgemeine Psychologie, Universität Konstanz, Konstanz, FRG.

Behavioural Processes
|June 14, 2014
PubMed
Summary
This summary is machine-generated.

Pigeons trained on a matching-to-sample task developed response biases due to stimulus location imbalances, not associative transitivity. This highlights how spatial factors influence learning in pigeons.

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Area of Science:

  • Behavioral psychology
  • Animal cognition
  • Operant conditioning

Background:

  • Symbolic matching-to-sample tasks are used to study associative learning and stimulus equivalence.
  • Pigeons (Columba livia) are common subjects in cognitive research due to their learning capabilities.

Purpose of the Study:

  • To investigate associative transitivity in pigeons using a symbolic matching-to-sample paradigm.
  • To explain unexpected behavioral patterns observed during testing with novel configurations.

Main Methods:

  • Pigeons were conditioned using a matching-to-sample task with visual patterns and configurations.
  • Reinforcement was delivered adjacent to correct response keys in an operant chamber.
  • Post-hoc analysis examined stimulus-reinforcement site relationships and further behavioral tests were conducted.

Main Results:

  • A consistent, unexpected behavior emerged during tests with novel configurations.
  • Post-hoc analysis revealed location imbalances between comparison stimuli and reinforcement sites.
  • These imbalances created response side biases, influencing the pigeons' choices.
  • Behavioral outcomes depended on the directionality of lateral stimulus control.

Conclusions:

  • Location imbalances, not associative transitivity, drove the observed behavior in pigeons.
  • Spatial factors and response biases can significantly impact conditional discrimination learning.
  • The findings contrast with previous assumptions about rule-based learning in such tasks.