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Results

#1. Lucy, a Board Certified Behavior Analyst (BCBA), develops a new behavior plan aimed at reducing Glenda’s aggression, which occurs both at home and at school. After collecting comprehensive baseline data across all relevant settings, Lucy implements the behavior plan. Two weeks following the intervention’s introduction, significant and positive progress is observed in the reduction of Glenda’s aggressive behaviors. Subsequently, Lucy instructs her team to temporarily cease implementing the intervention for the next week and a half. Considering this specific sequence of experimental phases, what type of experimental design is Lucy most likely utilizing?

Multiple baseline design

Alternating treatments design

Withdrawal (reversal) design

Multiple probe design

This scenario precisely describes a withdrawal or reversal experimental design This design typically involves an initial baseline phase A followed by an intervention phase B and then a return to baseline conditions A by withdrawing the intervention The purpose of withdrawing the intervention is to demonstrate a functional relationship between the intervention and the behavior change by observing whether the behavior reverts back towards baseline levels when the intervention is removed The text clearly outlines this sequence baseline data taken intervention implemented progress observed and then the intervention is removed or temporarily discontinued While the ethics of withdrawing an effective intervention for aggression would be a separate consideration the question specifically asks to identify the design based on the procedural steps taken

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