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Reinforcement delay: some effects on behavioral contrast.

Journal of the Experimental Analysis of Behavior

|May 1, 1972

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Behavioral contrast in pigeons was more consistent with delayed reinforcement or extinction. However, the duration of delay or extinction did not significantly alter the amount of behavioral contrast observed.

Area of Science:

Behavioral psychology
Animal behavior studies

Background:

Behavioral contrast is a phenomenon where changes in reinforcement in one component of a schedule affect behavior in another.
Previous research has explored factors influencing behavioral contrast, but the role of delay duration remains a key area of investigation.

Purpose of the Study:

To investigate the effect of delayed reinforcement and extinction on behavioral contrast in pigeons.
To determine if the duration of reinforcement delay or extinction influences the magnitude of behavioral contrast.

Main Methods:

Thirty-five White Carneaux pigeons were initially exposed to a multiple variable-interval schedule.
Subsequently, pigeons were divided into groups receiving delayed reinforcement (2.5, 5, 10, or 120 sec) or extinction in one component of the schedule.

Related Experiment Videos

Main Results:

Behavioral contrast was observed in some subjects across all groups.
Contrast was more consistent in groups with extinction or longer reinforcement delays.
No statistically significant difference in the amount of behavioral contrast was found between groups with varying delay durations or extinction.

Conclusions:

Neither reduced reinforcement frequency nor response rate during the altered component is essential for behavioral contrast.
The consistency of behavioral contrast may be influenced by the presence of extinction or significant delays, but not necessarily the duration of these conditions.