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A General Method for Evaluating Incubation of Sucrose Craving in Rats

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Published on: November 4, 2011

Satiation, capacity, and within-session responding.

T B DeMarse¹, P R Killeen, D Baker

¹Department of Psychology, Arizona State University, Tempe 85287-1104, USA. tdemarse@caltech.edu

Journal of the Experimental Analysis of Behavior

|December 22, 1999

Summary

This summary is machine-generated.

Behavioral responses can change within a session due to satiation. This study found that an animal's capacity to consume food, not just the absolute amount eaten, predicts how quickly it satiates and alters its behavior.

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Area of Science:

Behavioral science
Animal behavior
Operant conditioning

Background:

Behavioral responding can change significantly within a single experimental session.
The role of satiation in these within-session changes is not fully understood.
Previous research suggests factors like consumption capacity may influence response rates.

Purpose of the Study:

To investigate the role of satiation in within-session changes in behavioral responding.
To examine how an animal's food consumption capacity influences satiation effects.
To identify a reliable method for measuring an animal's consumption capacity.

Main Methods:

Three experiments were conducted using pigeons as subjects.
Experiment 1: Assessed the stability of food consumption capacity across different measurement methods.
Experiments 2 & 3: Manipulated food availability and prefeeding to examine the effects of satiation on key-pecking behavior under a variable-interval schedule, comparing subjects with different consumption capacities.

Main Results:

Pigeon food consumption capacity was stable across measurement methods.
Subjects with smaller consumption capacities satiated faster and showed greater decreases in responding.
Within-session response decreases were better predicted by consumption relative to capacity than by absolute consumption.
Prefeeding reduced response rates, with smaller capacity subjects showing greater reductions.

Conclusions:

Satiation plays a significant role in within-session changes in behavioral responding.
An animal's individual consumption capacity is a critical variable influencing satiation.
Measuring consumption relative to capacity provides a more accurate prediction of behavioral changes.
These findings highlight the importance of considering individual differences in consumption capacity in behavioral research.