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Results

#1. A student engages in a high rate of hand flapping in Classroom A, where the teacher provides intermittent attention. In Classroom B, the student also engages in hand flapping, but the teacher there ignores it. The BCBA working with the student implements an intervention in Classroom A that thins the schedule of attention for hand flapping, resulting in a decrease in hand flapping in Classroom A. Concurrently, the BCBA observes a significant increase in hand flapping in Classroom B, where no changes were made to the schedule of attention. This phenomenon is best described as

Response differentiation

Stimulus generalization

Behavioral contrast

Differential reinforcement

Behavioral contrast is a phenomenon where a change in the rate of reinforcement in one setting or for one behavior results in an opposite change in the rate of a behavior in another setting or for another behavior even when the reinforcement schedule in the second setting has not been altered In this scenario the decrease in hand flapping in Classroom A due to thinning reinforcement leads to an increase in hand flapping in Classroom B where the reinforcement schedule remained unchanged The text specifies that behavioral contrast typically occurs as a type of multiple reinforcement schedule implying that the two environments Classroom A and B present different stimulus conditions under which distinct reinforcement contingencies operate for the same behavior but not simultaneously The effect observed is a contrast in behavior rate between the two settings

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