The A-B-A design is a much more powerful single-subject design than the A-B design because it reduces the likelihood that the researcher will conclude that an improvement is due to the treatment when...


The A-B-A design is a much more powerful single-subject design than the A-B design because it reduces the likelihood that the researcher will conclude that an improvement is due to the treatment when it was simply due to a gradual endogenous recovery process. Yet the A-B-A design requires stopping the very treatment that may be having a beneficial effect. Under what conditions do you think it is safe to use an A-B-A design? Why do some researchers argue that an A-B-A-B design lessens the potential for ethical problems?

Sep 05, 2022
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