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Results

#1. A Board Certified Behavior Analyst (BCBA) is implementing a changing criterion design to reduce the number of cigarettes smoked by a client. The initial criterion is set at 20 cigarettes per day, and the BCBA plans to systematically decrease this criterion over time. To confidently demonstrate experimental control within this design, which of the following outcomes is most crucial?

The client’s smoking behavior changes drastically below the set criterion in each phase.

The client’s smoking behavior changes each time the criterion is adjusted, regardless of the direction.

The client’s smoking behavior changes concurrently with the set criterion, whether increasing or decreasing.

The client’s smoking behavior remains consistently above the set criterion in all phases.

In a changing criterion design experimental control is demonstrated when the target behavior systematically changes in a stepwise fashion to match the new criterion set for each phase This means if the criterion is decreased the behavior should decrease to meet it if the criterion is increased the behavior should increase to meet it Option C accurately reflects this by stating the behavior changes concurrently ie in the same direction and magnitude or at least to the criterion level with the criterion Options A and B are incorrect because drastically below the criterion or simply changing without matching the criterions direction or level does not demonstrate control Option D indicates a lack of control as the behavior is not conforming to the interventions goals

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