A 1977 meta-analysis by Smith and Glass concluded that the average person receiving psychotherapy showed more positive outcomes than 75 percent of non-treated individuals. Modern meta-analyses of the effectiveness of therapy have generated
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Question

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Modern meta-analyses generally support the effectiveness of psychotherapy, showing that treated individuals tend to fare better than a significant portion of non-treated individuals, often yielding results roughly equivalent to earlier findings.

A 1977 Meta-Analysis by Smith and Glass Concluded That the Average