ABSTRACT
The Reversal-Replication (ABAB) Design Suppose the teacher would like to demonstrate convincingly that the treatment program was indeed responsible for Kelly’s improvement. Besides satisfying the teacher’s curiosity, there are several practical reasons why such a demonstration might be desirable. Such a demonstration could indicate whether to try a similar procedure with another problem Kelly might have, whether to try similar procedures with other students in the class, or even whether the teacher should recommend a similar procedure to other teachers. Therefore, at the end of the second week of the reinforcement program, the teacher decided to eliminate the reinforcement and return to the baseline condition. Suppose that the hypothetical results of this manipulation by the teacher are those shown in Figure 22.1.
