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Divided attention and the matching law: sample duration affects sensitivity to reinforcement allocation
Timothy A Shahan1, Christopher A Podlesnik
1Department of Psychology, Utah State University, Logan, Utah 84322, USA. tim.shahan@usu.edu
Learning & Behavior
|October 9, 2007
Summary
Pigeons
Area of Science:
- Cognitive psychology
- Animal behavior
- Behavioral neuroscience
Background:
- Pigeons' divided attention aligns with the generalized matching law.
- Investigating factors influencing attention allocation in pigeons is crucial.
Purpose of the Study:
- To determine if sample duration affects pigeons' sensitivity to reinforcement changes.
- To explore how differential reinforcement influences attention to compound stimuli.
Main Methods:
- Pigeons performed a delayed matching-to-sample task with compound stimuli (color + line orientation).
- Sample duration varied (0.75s vs. 2.25s), and relative reinforcement for correct matches was manipulated.
- Comparison stimuli involved either colors or line orientations.
Main Results:
- Pigeons showed greater sensitivity to reinforcement variations with longer sample durations.
- Accuracy was more influenced by reinforcement changes when the sample duration was extended.
Conclusions:
- Sample duration modulates the impact of differential reinforcement on attention allocation in pigeons.
- Findings support the role of goal-directed behavior theories in explaining attention control.
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