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Operant Procedures for Assessing Behavioral Flexibility in Rats
Published on: February 15, 2015
Altering the proportion of components in a mixed fixed-ratio schedule.
Journal of the Experimental Analysis of Behavior
|September 1, 1973
Summary
Pigeons trained on mixed schedules showed reduced pauses and increased response bursts (primes) as the proportion of shorter fixed-ratio components increased. These changes indicate adaptive behavioral adjustments to reinforcement schedules.
Area of Science:
- Behavioral science
- Animal behavior studies
- Operant conditioning research
Background:
- Pigeons exhibit complex behaviors under various reinforcement schedules.
- Understanding response patterns in fixed-ratio schedules is crucial for behavioral analysis.
Purpose of the Study:
- To investigate the impact of varying proportions of fixed-ratio (FR) 100 and FR 10 components on pigeon behavior.
- To analyze changes in post-component pauses and response bursts (primes) under mixed schedules.
Main Methods:
- Pigeons were trained on a mixed schedule with alternating FR 100 and FR 10 components.
- The ratio of FR 100 to FR 10 components was systematically varied across ascending and descending series.
- Behavioral responses, including pauses and primes, were recorded and analyzed.
Main Results:
- A decrease in the FR 100:FR 10 ratio to approximately 20:1 and below led to shorter post-FR 100 pauses.
- The frequency of response bursts (primes) at the start of FR 100 components initially increased and then decreased at very low ratios.
- When FR 10 components were highly frequent, primes were initially suppressed after an FR 10 but later appeared throughout subsequent FR 100 components.
Conclusions:
- Pigeon behavior adapts to changes in mixed fixed-ratio schedules.
- The observed changes in pauses and primes suggest adjustments in anticipation and response patterns based on reinforcement history and frequency.
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