Treatment of Depression Collaborative Research Program

The Treatment of Depression Collaborative Research Program (TDCRP) was the first multisite coordinated study in the field of psychotherapy research funded by the National Institute of Mental Health. It was also the first large-scale trial comparing two psychotherapies, medication, and a placebo control condition. The pioneer and primary investigator of the TDCRP was Irene Elkin, a creative and innovative researcher with vast contributions to the field.

Several years after publishing its main findings, TDCRP investigators made the data available to the public by publishing it in the public use data tape. This allowed researchers around the world to use this high-quality database to study process and outcome. Now, more than 30 years after the first paper was published, the TDCRP data are still used by psychotherapy ...