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1Department of Psychology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. rescorla@cattell.psych.upenn.edu
Learning & Behavior
|December 1, 2007
Summary
Time impacts rat behavior differently based on learning history. Simple acquisition showed no change, but reversal learning and partial reinforcement led to increased responding over time, suggesting nonreinforcement effects persist.
Area of Science:
- Behavioral psychology
- Animal learning research
Background:
- Understanding temporal effects on learned behaviors is crucial.
- Previous research explored stimulus control and performance levels.
Purpose of the Study:
- To investigate how time influences behavioral responding after different learning histories.
- To determine if nonreinforcement effects persist through subsequent reinforcement phases.
Main Methods:
- Six experiments utilized the magazine approach with rat subjects.
- Stimuli were brought to a moderate performance level via acquisition, extinction, reversal learning, repeated reversal, or partial reinforcement.
Main Results:
- No increase in responding over time was observed for stimuli undergoing simple acquisition.
- Stimuli trained through reversal learning, repeated reversal, or partial reinforcement demonstrated increased responding with time.
Conclusions:
- The persistence of decremental processes from nonreinforcement is evident.
- Behavioral responding is sensitive to the passage of time, particularly after nonreinforcement experiences.
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