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Models of ratio schedule performance

L A Bizo¹, P R Killeen

¹Department of Psychology, Arizona State University, Tempe 85287-1104, USA. lewisb@asuvm.inre.asu.edu

Journal of Experimental Psychology. Animal Behavior Processes

|July 1, 1997

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Mathematical principles of reinforcement were tested. Longer reinforcer durations and intertrial intervals increased responding, supporting Killeen

Area of Science:

Behavioral psychology
Mathematical psychology

Background:

P. R. Killeen's (1994) mathematical principles of reinforcement provide a framework for understanding behavior.
Reinforcement schedules are fundamental in behavioral research.

Purpose of the Study:

To test predictions of Killeen's mathematical principles of reinforcement.
To investigate the effects of various parameters on operant responding under ratio schedules.

Main Methods:

Operant responding was studied using ratio reinforcement schedules.
Variables manipulated included reinforcer duration, grain size, intertrial interval, response key type, and session parameters.

Main Results:

Longer reinforcer durations and larger grain sizes increased responding, primarily affecting specific activation (alpha).

Related Experiment Videos

Response key type influenced response time (delta), with key pecking being faster than treadle pressing.

Longer intertrial intervals increased response rates, reduced postreinforcement pauses, and increased running rates.

Conclusions:

The findings support Killeen's mathematical principles of reinforcement.
The study extended the theory to predict pause durations and run rates on ratio schedules.
Distinctions between energetic requirements and rate-limiting properties were necessary for extended responses.