Operant conditioning principles are typically studied in nonhuman organisms.
Understanding human sensitivity to reinforcement schedules is crucial for applied settings.
Distinguishing between direct contingency control and rule-governed behavior in humans is complex.
Purpose of the Study:
To investigate whether undergraduate students' behavior under complex schedules of reinforcement was directly controlled by contingencies or governed by rules.
To assess human sensitivity to the differences between ratio and interval reinforcement schedules.
To explore the role of explicit rule-learning in human operant behavior.
Main Methods:
Participants (undergraduates) performed button presses for points exchangeable for money under multiple random-ratio (RR) and random-interval (RI) schedules.
Schedule components were reversed to test sensitivity to contingency changes.
Participants described the schedules, with points contingent on guess accuracy, to probe for rule-governance.
Main Results:
Students consistently showed higher response rates in ratio than interval components, indicating sensitivity to schedule differences.
When schedules were altered (e.g., multiple RR RI to multiple RI RI), performance became inconsistent with standard schedule effects.
Specific manipulations, like preventing initial point deliveries, elicited high rates, suggesting rule-based adjustments rather than direct contingency control.
Conclusions:
Human participants demonstrated sensitivity to reinforcement schedule differences but their behavior was not solely dictated by direct contingencies.
The findings suggest that human performance in this context was likely rule-governed, deviating from patterns observed in nonhuman organisms.
This highlights the importance of considering cognitive factors and rule-learning when interpreting human operant behavior.