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Results

#1. A behavior consultant is developing a preliminary intervention plan for a client and decides to implement a design that begins with an initial period of observing the client’s behavior without intervention, followed directly by the introduction of a specific treatment. This design consists of only two distinct phases a baseline condition and a treatment condition. Based on this description, what type of experimental design is the consultant employing?

A) A WithdrawalReversal Design

B) An ABAB Design

C) An AB Design

D) A Stimulus-Response (SR) Design

The text directly addresses this question a two phase design that includes a baseline condition and a treatment condition would be considered what type of design its going to be an a b design An AB design is the simplest singlesubject design comprising a baseline phase A followed by an intervention phase B The text also clearly differentiates this from a withdrawal or reversal design stating that such designs are by definition at least three phases eg ABA where the intervention is withdrawn An ABAB design has four phases baseline intervention withdrawal reintervention A StimulusResponse SR design is not a recognized name for a standard experimental design in ABA in this context

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