Comparing choices and variations in people and rats: two teaching experiments.

Area of Science:

• Behavioral science
• Comparative psychology
• Operant conditioning

Background:

• Animal models are crucial for understanding fundamental behavioral principles.
• Operant conditioning research in animals has historically informed human psychology.
• Limited direct comparisons exist between human and animal operant behavior under controlled conditions.

Purpose of the Study:

• To compare human and rat operant behaviors under concurrent reinforcement schedules.
• To investigate the control of behavioral variability by contingent reinforcement in both species.
• To demonstrate the applicability of animal operant research to human behavior.

Main Methods:

• Concurrent schedules of reinforcement were used with computer-based tasks for humans and lever-pressing tasks for rats.
• Relative choice frequencies were analyzed as a function of relative reinforcement frequencies.
• Behavioral variability was manipulated by contingent reinforcement schedules in both species.

Main Results:

• Both humans and rats exhibited linear increases in choice frequency with reinforcement frequency under concurrent schedules.
• Similar patterns of undermatching and biases were observed in both species.
• Behavioral variability was effectively controlled by reinforcement contingencies in both humans and rats.

Conclusions:

• Human and rat operant behaviors show remarkable similarities in response to reinforcement schedules.
• Findings support the validity of using animal models to explain human operant behavior.
• Comparative operant research offers a powerful framework for understanding decision-making and behavioral adaptation across species.