Related Experiment Videos
Choice with initial and terminal link reinforcement: an alternative self-control paradigm
Heather L Peters1, Maree Hunt, David N Harper
1Department of Psychology,Victoria University of Wellington, Wellington, New Zealand. bhpeters@paradise.net.nz
Journal of Experimental Psychology. Animal Behavior Processes
|January 8, 2004
Summary
Rats chose delayed rewards over immediate ones, demonstrating self-control. This self-control behavior decreased as the delay between choices and rewards increased, offering insights into decision-making.
Area of Science:
- Behavioral psychology
- Animal behavior studies
Background:
- Self-control involves choosing a less desirable immediate outcome for a better future outcome.
- Understanding the mechanisms of self-control is crucial for various fields, including behavioral economics and addiction research.
Purpose of the Study:
- To investigate self-control in an animal model using a concurrent chain schedule.
- To examine the effect of delay on self-control in rats.
Main Methods:
- Rats were presented with choices between immediate (ethanol-free vs. ethanol-containing milk) and delayed (larger reinforcer) outcomes.
- A concurrent chain schedule was employed, with initial link choices determining access to terminal link reinforcers.
- The delay between initial and terminal link engagement was systematically varied.
Main Results:
- Rats demonstrated self-control by choosing the ethanol-free milk, which led to a larger future reward.
- The degree of self-control exhibited by the rats decreased significantly as the delay between the initial choice and the terminal reinforcer increased.
Conclusions:
- The animal model effectively simulates human self-control dilemmas involving immediate versus delayed gratification.
- Delay is a critical factor influencing self-control, with longer delays reducing the likelihood of choosing the larger, delayed reward.