PROVIDENCE, R.I. — PSYCHOTHERAPY is in decline. In the United States, from 1998 to 2007, the number of patients in outpatient mental health facilities receiving psychotherapy alone fell by 34 percent, while the number receiving medication alone increased by 23 percent.

This is not necessarily for a lack of interest. A recent analysis of 33 studies found that patients expressed a three-times-greater preference for psychotherapy over medications.

As well they should: for patients with the most common conditions, like depression and anxiety, empirically supported psychotherapies — that is, those shown to be safe and effective in randomized controlled trials — are indeed the best treatments of first choice. Medications, because of their potential side effects, should in most cases be considered only if therapy either doesn’t work well or if the patient isn’t willing to try counseling.

So what explains the gap between what people might prefer and benefit from, and what they get?

The answer is that psychotherapy has an image problem. Primary care physicians, insurers, policy makers, the public and even many therapists are largely unaware of the high level of research support that psychotherapy has. The situation is exacerbated by an assumption of greater scientific rigor in the biologically based practices of the pharmaceutical industries — industries that, not incidentally, also have the money to aggressively market and lobby for those practices.