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Preference for fixed-interval schedules: an alternative model.

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Researchers developed a new pigeon choice model for concurrent chain schedules. This model accurately predicts behavior based on reinforcement timing and frequency, improving upon previous theories.

Area of Science:

Behavioral psychology
Animal cognition
Operant conditioning

Background:

Concurrent chain schedules are used to study choice behavior.
Previous models have limitations in explaining pigeon choice under these schedules.

Purpose of the Study:

To evaluate existing models of concurrent chain performance.
To propose and validate a new model for predicting choice behavior in pigeons.

Main Methods:

Pigeons were trained using concurrent chain schedules with specific initial and terminal link parameters.
Choice proportions were systematically measured across 26 experimental conditions.

Main Results:

Existing models demonstrated inadequacy in explaining the observed choice proportions.

Related Experiment Videos

The novel model, incorporating terminal-link times, overall reinforcement rates, and terminal-link entries, explained 94% of the current data variance.

The model also accounted for significant variance in prior studies.

Conclusions:

The proposed model offers a more comprehensive explanation of choice behavior in concurrent chain schedules.
The model simplifies to reinforcement rate matching under basic concurrent schedules, unifying findings.