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Results

#1. A BCBA implements a complex intervention plan for a client with aggressive behaviors. Initially, a baseline phase is conducted. Following this, the BCBA rapidly alternates between two different interventions (e.g., Differential Reinforcement of Other Behavior vs. Non-contingent Reinforcement) across sessions to compare their effectiveness. After several cycles of alternation, both interventions are briefly removed, and behavior returns to baseline levels. Subsequently, one of the interventions is reintroduced for a period, then withdrawn again to confirm its effect. Which two primary experimental designs are most evidently combined in this intervention sequence?

A) Multiple Baseline Design and Changing Criterion Design

B) Alternating Treatments Design and WithdrawalReversal Design

C) Multielement Design and Multiple Treatment Reversal Design

D) Component Analysis Design and Parallel Treatments Design

The text describes a graph where after a baseline there is a sequence of music to video games to music to video games This rapid sequential presentation of two or more distinct conditions interventions in a single phase to assess their relative effectiveness is the hallmark of an Alternating Treatments Design also known as a Multielement Design The text then describes we then withdraw everything go to baseline video baseline video The systematic removal of an intervention or interventions and return to baseline conditions followed by reintroduction and potential subsequent withdrawal is the defining characteristic of a Withdrawal Design or Reversal Design if the original condition is restored Therefore the intervention sequence clearly combines an Alternating Treatments Design with a WithdrawalReversal Design to analyze the effects of the interventions

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