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Behavioral economics research shows that pigeons adjust their choices based on outcome value. Shorter terminal links led to faster shifts in response allocation, especially when outcome differences were significant.

Keywords:
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Area of Science:

  • Behavioral psychology
  • Animal behavior
  • Operant conditioning

Background:

  • The matching law in behavioral economics explains response allocation based on reinforcement properties.
  • Physical, temporal, and contextual factors influence how organisms distribute responses.
  • Changes in outcome value alter response ratios over time and with exposure to new contingencies.

Purpose of the Study:

  • To investigate response allocation dynamics during transitions between reinforcement schedules.
  • To disambiguate initial response allocation from stable states in concurrent-chain schedules.
  • To analyze the relationship between transition duration and the immediacy of reinforcement.

Main Methods:

  • Five pigeons were trained on concurrent-chain schedules with fixed-interval terminal links.
  • Terminal-link schedules were altered daily to observe adjustments in response allocation.
  • Transition durations were calculated by analyzing change points in cumulative response plots.

Main Results:

  • Initially, pigeons showed indifference to terminal-link schedule changes.
  • Response allocation shifted to favor initial links associated with shorter terminal links.
  • Transition duration was negatively correlated with the absolute log immediacy ratio; longer transitions occurred when schedules were similar.

Conclusions:

  • Pigeons' response allocation adapts to changes in reinforcement value, favoring more immediate outcomes.
  • The magnitude of difference between terminal-link schedules influences the speed of response allocation shifts.
  • This study provides insights into the temporal dynamics of choice behavior under changing reinforcement conditions.