Mordred is having temper tantrums at home, at school, and at his grandparents' house. After working with the parents for a while, the therapist believes that the child is being rewarded for his tantrums in each setting because his teacher, parents, and grandparents generally give him what he wants just to make him stop yelling. The therapist devises a plan to stop his tantrums but first implements the plan at home, then the following week at school, and finally at the grandparents' home several weeks later. From a research perspective, this is an example of a(n)

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This is an example of a multiple baseline design because the intervention is implemented in different settings at different times, allowing for comparison and analysis of the effect on behavior across settings. A withdrawal design would involve removing the intervention after it had been implemented to see if the behavior returns to its original state. Placebo control involves giving a placebo to one group and a different treatment to another to see which is more effective, and external validity design is a type of study aimed at evaluating the generalizability of research findings.

Mordred Is Having Temper Tantrums at Home, at School, and at His