The scientific literature is full of clinical trials showing that cognitive behavioral therapy is superior to other forms of therapy. CBT is also regarded as more efficient and more grounded in ‘science.” As Dr. Drew Weston writes in his important paper on empirically supported therapies https://pubmed.ncbi.nlm.nih.gov/15250817, what the science really tells us is not so simple. When comparing different psychotherapies, it all depends on who is leading the study.
Most university clinical psychology departments are dominated by cognitive behavioral therapists. Accordingly, cognitive behavioral psychologists get most of the grant money and run most of the trials comparing different therapies. And this is a problem! A phenomenon called the Champion Effect means that the therapy preferred by the Principal Investigator in any trial tends to outperform the other treatments in the trial. Because there are so many cognitive behavioral psychologists out there running trials, the literature reflects these results, seeming to suggest that CBT works better than other treatments. To know whether or not CBT works better than other forms of treatment, we need large scale clinical trials that are run by Principal Investigators who are unaffiliated with any particular school of therapy. But these trials are very expensive and hard to do.
The NIMH Treatment of Depression Collaborative Research Program was carried out in the 1980s by a team of psychologists and psychiatrists. Its goal was to compare two forms of brief psychotherapy—CBT and “Interpersonal Psychotherapy.” The DCRP enrolled hundreds of patients and followed them over a long period of time. They found no differences between CBT and IPT. *
CBT techniques can be incredibly helpful for some clients—and when it comes to CBT “bibliotherapy,” I love David Burns’ Feeling Good (https://www.thriftbooks.com). But what the science really shows is that no one therapeutic approach is more ‘scientific,’ or more effective, than others. To the contrary, it seems pretty clear that non specific and relational factors, like warmth, intimacy, and respect, are the most important predictors of effective treatment.
*Elkin I, Parloff MB, Hadley SW, Autry JH. NIMH Treatment of Depression Collaborative Research Program: Background and Research Plan. Arch Gen Psychiatry. 1985;42(3):305–316. doi:10.1001/archpsyc.1985.01790260103013