Board Certified Behavior Analyst (BCBA) 2025 – 400 Free Practice Questions to Pass the Exam

The use of a withdrawal design, also known as an ABA or reversal design, is least appropriate when evaluating an intervention for severe problem behavior. This design involves removing the treatment to observe if the behavior reverts to its baseline levels. In the case of severe problem behavior, such as aggressive or harmful actions, withdrawing the intervention can pose significant risks to the individual or others. It may result in increased problem behavior, which can lead to safety concerns, and ethical dilemmas related to potentially worsening the individual's situation.

In contexts where the behavior is severe, the priority is often to provide consistent and effective interventions rather than to intermittently withdraw them. This ensures that the individual’s safety and well-being are maintained, and it allows for the collection of data that appropriately reflects the impact of the intervention without risking harm. Therefore, the withdrawal design is not suitable for severe problem behaviors, as the consequences of reverting to baseline conditions can be detrimental.