The meta-analysis by Smith,Glass,and Miller of the efficacy of psychotherapies for adult and child problems have found that the average person receiving therapy is better off than approximately ____ of people with similar problems who did not receive therapy.

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The meta-analysis found that the average person receiving therapy is better off than approximately 80% of people who did not receive therapy with similar problems.

The Meta-Analysis by Smith,Glass,and Miller of the Efficacy of Psychotherapies