Researchers who conduct therapy outcome studies attempt to rule out alternative explanations for positive outcomes by making sure that their research involves

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Control groups are used to establish a baseline for comparison and to rule out alternative explanations for positive outcomes. They help ensure that any changes in the therapy group are a result of the treatment being studied and not due to factors such as natural recovery or placebo effects. Large sample sizes, clear definitions of treatments, and participant selection are also important considerations in therapy outcome studies, but control groups are the primary method for ruling out alternative explanations.

Researchers Who Conduct Therapy Outcome Studies Attempt to Rule Out