Group therapy is one of the more underused mental health interventions in the United States. Clinicians refer to it less often than individual therapy, and clients often arrive at the idea of a group skeptical of whether sitting in a room with other people will help them with something they think of as private. The research literature suggests group work is, in many cases, as effective as the individual therapy they were expecting.

What the evidence shows

A 2020 meta-analysis of 57 randomized controlled trials covering 3,656 participants found that group psychotherapy reduced specific symptoms of anxiety disorders significantly more than no-treatment control groups (Hedges’ g = 0.92), with no significant differences compared to individual psychotherapy or pharmacotherapy (Barkowski et al., 2020). The analysis covered generalized anxiety, social anxiety, and panic disorder. Mixed-diagnosis groups proved as effective as diagnosis-specific groups, which has practical implications for community practice where caseloads rarely allow for tightly homogenous group composition.

For PTSD, a 2019 meta-analysis of 20 RCTs comprising 2,244 adults found group psychotherapy significantly reduced PTSD symptoms (g = 0.70) compared to no-treatment controls, with comparable efficacy to other active treatments (Schwartze et al., 2019). Exposure-based cognitive-behavioral group therapy had the strongest empirical base. Trauma type and gender emerged as important moderators of within-treatment effects, which means group composition and clinician training matter more, not less, when treating trauma in a group format.

In medical contexts, a 2023 meta-analysis of 37 studies covering 5,902 women with non-metastatic breast cancer found group therapy reduced mental distress and improved quality of life and coping, particularly when delivered as CBT or third-wave CBT (Rosendahl et al., 2023). The effects on mental distress were modest, the effects on coping and quality of life were stronger.

The pattern across these reviews is consistent. Group treatment shows efficacy comparable to individual therapy in many of the conditions studied, and outperforms no-treatment controls by a wide margin. The clinical question is rarely whether group therapy works. It is whether a specific group is the right fit for a specific person at a specific moment in their life.

When group therapy fits well

Group therapy tends to fit best when the presenting concern involves interpersonal patterns, isolation, identity, shared diagnosis, grief, or the experience of being a marginalized or minoritized person inside systems that did not see them clearly. The group itself becomes the intervention, not just the format. Hearing another person describe the dynamic you have been carrying alone for years is, at minimum, a relief. At its most useful, it gives you new options for what to try in your own relationships outside the room.

Group therapy tends to fit poorly when the person is acutely unsafe, when their distress would be exposed to the group at a level they cannot yet metabolize, or when the group composition would place them in a harmful dynamic. Examples of the last point: the only Black member in a group processing race, a survivor in a group that includes someone whose presentation pattern is triggering to them, or a person early in recovery placed in a group where active use is regularly discussed without containment.

The decision is clinical. A thorough intake conversation with the group leader is where most of these questions get answered.

What to look for in a group

A few quality markers when you or your client are evaluating a group:

• A licensed clinician facilitates the group, or there is a clearly identified peer-led structure where peer leadership is the deliberate design.
• The group runs a pre-group screening that establishes clinical fit and informed consent.
• The group has a stated theoretical orientation (cognitive-behavioral, psychodynamic, interpersonal, third-wave CBT such as ACT or DBT, twelve-step, narrative, somatic, etc.).
• The group has stated agreements about confidentiality, attendance, communication outside the group, and how conflict gets handled.
• The group has a clear time frame, whether that is a closed cohort of a fixed number of sessions or an open-ended ongoing group with rolling enrollment.
• The group has a stated way out if the fit is wrong, and that way out does not require the person to defend their decision to leave.

Where to find groups

Most directories that surface mental health providers index individual practitioners, not groups. A search for “trauma group near me” in a generic provider directory tends to return individual therapists who say they offer groups, not the groups themselves with their facilitators, formats, populations, and schedules.

For a group-specific search, mytherapygroups.com is the directory I send clients and supervisees to. It indexes therapy groups and support groups by topic, population, and format (in-person, virtual, or hybrid), and each listing shows the facilitator’s credentials, the group’s structure, and how to contact the facilitator directly. The site is built for the actual question a person asks when they are looking for a group, which is “who runs a group on this, where, in what format, and how do I get in.”

If you are a clinician building a referral network or a supervisor pointing students toward viable group options to learn from, the same directory works for that use. It is a useful tool to know about regardless of which side of the referral conversation you are on.

A note on clinical safety. If you are referring a client whose presentation involves acute suicidality, active untreated psychosis, severe substance use without concurrent treatment, or recent stabilization from a psychiatric hospitalization, group therapy is rarely the first stop. Stabilize the immediate clinical picture first, then refer to group once the work inside a group will be productive rather than dysregulating.

Where this leaves us

Group therapy has solid empirical support for several common presentations. It works on its own. It works alongside individual therapy. It works in mixed-diagnosis formats when the facilitation is competent. The harder clinical problem is usually finding a specific group that fits a specific person, which is a separate question from whether the modality works in general. That is where a group-specific directory like My Therapy Groups becomes practically useful.

If you are a clinician thinking through whether a group referral is the right move for a specific client, or a supervisor building a list of viable groups for your team, send me a message.

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Stephanie A. Smith, LCSW, ASW-G, C-ASWCM The Social Work Progressive · thesocialworkprogressive.com

References

Barkowski, S., Schwartze, D., Strauss, B., Burlingame, G. M., & Rosendahl, J. (2020). Efficacy of group psychotherapy for anxiety disorders: A systematic review and meta-analysis. Psychotherapy Research.

Rosendahl, J., Gawlytta, R., Ferrari, A., Schulz-Heik, R. J., & Strauss, B. (2023). Efficacy of group therapy to reduce mental distress in women with non-metastatic breast cancer: A systematic review and meta-analysis of randomized controlled trials. Psycho-Oncology.

Schwartze, D., Barkowski, S., Strauss, B., Knaevelsrud, C., & Rosendahl, J. (2019). Efficacy of group psychotherapy for posttraumatic stress disorder: Systematic review and meta-analysis of randomized controlled trials. Psychotherapy Research.