For this Discussion, you will concentrate on the changing criterion design. Discuss the internal and external validity associated with the changing criterion design to include the experimental control logic for the design. Include the advantages and limitation of the research design as well. Following the guidelines delineated on Chapter 12 of the Gast and Ledford (2014) text, provide a description and rationale of how you could apply the changing criterion design to the target behavior and intervention you identified in Unit 5.The behavior is the same nail biting.

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Changing Criterion Designs
Changing Criterion design is used in applied research for evaluating instructional and therapy programs in changing behavior gradually or stepwise (Gast & Ledford, 2014). It is used for increasing or decreasing behaviors that are already in subject’s repertoire (Gast & Ledford, 2014). It requires initial baseline observation on a single target behavior followed by treatment or instructional program implementation in phases, i.e. in series of steps. A stepwise change in criterion rate for the target behavior is connected to each treatment phase, so that each phase of the treatment represents a baseline for the subsequent treatment phase (Gast & Ledford, 2014). Experimental control is demonstrated when the rate of target behavior changes according to each stepwise change in criterion. Therapeutic...

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