Smith and Colleagues Analyzed the Results of 475 Research Studies

Smith and colleagues analyzed the results of 475 research studies that were designed to evaluate one or more forms of psychotherapy.In general, these researchers found that:

A) people who received some form of psychotherapy showed no improvement over people who were left untreated
B) people who received some form of psychotherapy were better off than people who were left untreated
C) people who were left untreated were better off than people who received some form of psychotherapy
D) people who received some form of psychotherapy only improved when there was no control group for comparison