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A Method for Investigating Change Blindness in Pigeons (Columba Livia)
Published on: September 7, 2018
Pigeon and human performance in a multi-armed bandit task in response to changes in variable interval schedules
Deborah Racey1, Michael E Young, Dennis Garlick
1Western Carolina University, Cullowhee, NC, USA.
Learning & Behavior
|March 8, 2011
Summary
Organisms balance exploiting known rewards and exploring new options. Pigeons and people on a bandit task showed different exploration strategies when reward schedules changed, with humans adapting faster to signaled changes.
Area of Science:
- Behavioral Economics
- Comparative Cognition
- Decision Science
Background:
- Organisms constantly face the exploitation-exploration trade-off, balancing known rewards with seeking novel opportunities.
- Understanding this fundamental problem is crucial across biological and cognitive sciences.
Purpose of the Study:
- To investigate how different species, specifically pigeons and humans, manage the exploitation-exploration dilemma.
- To compare species-specific responses to dynamic changes in reward contingencies within a decision-making task.
Main Methods:
- Pigeons and humans participated in an eight-armed bandit task with variable interval (VI) schedules.
- Reward schedules were dynamically altered at regular intervals, prompting potential shifts in exploration behavior.
- Luce's decision rule was used to model observed choice behaviors.
Main Results:
- Both species demonstrated sensitivity to payoff changes, often aligning with Luce's decision rule.
- Pigeons' exploration was primarily triggered by experienced schedule changes, not session beginnings.
- Humans exhibited rapid learning and exploration in response to signaled changes in payoff schedules.
Conclusions:
- Species exhibit distinct strategies in navigating the exploitation-exploration trade-off.
- Human decision-making in dynamic environments shows quicker adaptation to explicit cues compared to pigeons.
