Examination for Professional Practice of Psychology (EPPP) Practice Test

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What is the primary purpose of the meta-analysis conducted by Smith, Glass, and Miller regarding psychotherapy outcomes?

To assess the effectiveness of various therapeutic approaches
To establish standard psychotherapeutic practices
To determine the average effect of therapy
To analyze the long-term benefits of therapy

The correct answer is: To determine the average effect of therapy

The primary purpose of the meta-analysis conducted by Smith, Glass, and Miller was to determine the average effect of therapy. Meta-analysis is a statistical technique used to aggregate the results of multiple studies, providing a more comprehensive understanding of therapy’s overall efficacy. By analyzing data from various psychotherapy studies, the authors aimed to quantify the overall effectiveness of therapeutic interventions, offering evidence that can be used to inform best practices in the field of psychology. This average effect can reveal how much improvement individuals typically experience from therapy compared to those who do not receive treatment. Such findings are crucial for both clinicians and researchers, as they provide empirical support for the value of psychotherapy as an intervention, guiding future research and clinical decisions.