What is Group Therapy?
Group therapy is a structured form of psychotherapy in which a trained therapist or co-therapists facilitate therapeutic work with multiple clients—typically 5 to 15 people—who meet regularly to explore psychological concerns, interpersonal patterns, and emotional challenges. Unlike individual therapy, group therapy leverages the social microcosm of the group itself as a primary mechanism of change, allowing participants to receive feedback, witness others’ struggles, practice new behaviors, and build connection in a confidential setting. Sessions typically run 60 to 120 minutes and may be open-ended or time-limited, focusing on themes ranging from trauma recovery and addiction to general personal growth.
The therapeutic potency of group work rests on several factors identified by psychiatrist Irvin Yalom: universality (the recognition that others share similar struggles), interpersonal learning, cohesion, and the opportunity to help others. Group therapy is distinct from support groups, which are often peer-led and less clinically structured, and from encounter groups or growth seminars, which may lack credentialed oversight.
Origins & Lineage
Group therapy emerged in the early 20th century, initially as a pragmatic response to resource limitations. Joseph Pratt, a Boston internist, is often credited with pioneering group methods around 1905 when he gathered tuberculosis patients for educational classes and mutual support. Psychoanalysts Jacob Moreno and Trigant Burrow began experimenting with therapeutic groups in the 1920s; Moreno coined the term “group therapy” in 1931 and developed psychodrama, a group-based method using role-play and enactment.
The field expanded dramatically during and after World War II, when the sheer volume of traumatized soldiers overwhelmed available psychiatric services. Military psychiatrists, including Wilfred Bion and S.H. Foulkes in Britain, refined group methods in hospital settings. Bion’s work at the Northfield Military Hospital (1942-1945) explored group dynamics and unconscious processes, while Foulkes later founded the Group Analytic Society in London (1952), establishing group analysis as a distinct psychoanalytic tradition.
In the United States, Irvin Yalom’s 1970 book The Theory and Practice of Group Psychotherapy became the field’s foundational text, synthesizing decades of research and clinical wisdom. Yalom identified therapeutic factors unique to group settings and articulated techniques still taught in graduate programs today. Concurrently, the human potential movement of the 1960s and 70s popularized encounter groups and T-groups (training groups), which emphasized emotional expression and personal growth outside clinical contexts, though these lacked the rigor and ethical safeguards of licensed group therapy.
How It’s Practiced
A typical group therapy session begins with a check-in, where members share what’s present for them. The therapist facilitates discussion, sometimes introducing structured exercises or psychoeducational content, but more often allowing organic interaction to unfold. Members might explore recurring relational patterns, give and receive feedback, or practice vulnerability. The therapist tracks group dynamics—power struggles, scapegoating, subgrouping—and intervenes to maintain safety and deepen exploration.
Groups vary widely in theoretical orientation. Process-oriented groups focus on here-and-now interactions within the room, examining how members relate to one another as a window into outside relationships. Cognitive-behavioral groups teach specific skills (distress tolerance, assertiveness) through worksheets and homework. Psychodynamic groups explore unconscious patterns and transference. Theme-based groups gather people facing similar issues: grief, eating disorders, substance use, LGBTQ+ identity, chronic illness.
Some groups are closed (same members throughout, with a set end date), while others are open (members join and leave on rolling basis). Group norms around confidentiality, attendance, and outside contact are established early and reinforced continuously.
Group Therapy Today
Group therapy is offered in community mental health centers, private practices, hospitals, treatment facilities, and increasingly online via video platforms. Insurance often covers it, and it typically costs less per session than individual therapy. The COVID-19 pandemic accelerated adoption of virtual groups, which research suggests can be nearly as effective as in-person formats for many populations.
Seeker communities and wellness spaces sometimes host therapy-adjacent groups—men’s groups, women’s circles, psychedelic integration groups—that borrow group therapy language and techniques but operate outside clinical frameworks. This blurred boundary can create confusion; legitimate group therapy requires a licensed mental health professional (psychologist, clinical social worker, licensed counselor, or psychiatrist) with specialized training in group facilitation.
Specialized modalities have also emerged: Dialectical Behavior Therapy (DBT) groups for emotion regulation, process groups for therapists-in-training, and groups integrating somatic or expressive arts methods.
Common Misconceptions
Group therapy is not a support group, though the two are often conflated. Support groups (AA, grief support, parenting groups) are typically free, peer-led, and focused on mutual aid rather than therapeutic intervention. Group therapy involves clinical assessment, treatment planning, and licensed oversight.
It is not “watered-down” individual therapy. Research consistently shows group therapy to be as effective as individual therapy for many concerns, and superior for interpersonal issues. The group setting provides real-time relational feedback impossible to replicate one-on-one.
Group therapy is not inherently confrontational or aggressive. While some historical approaches (Synanon, certain addiction programs) used harsh confrontation, contemporary group therapy emphasizes safety, respect, and informed consent. Participants are not forced to share and can set their own pace.
Finally, group therapy is not a quick fix or workshop. Meaningful change typically requires consistent attendance over months, not a weekend intensive.
How to Begin
To find a reputable group, start with a licensed therapist in your area or insurance network and ask what groups they facilitate or can refer you to. Psychology Today’s therapist directory allows filtering by group therapy specialization. Many therapists conduct a pre-group individual screening to assess fit and prepare new members.
For those exploring the field intellectually, Irvin Yalom’s The Theory and Practice of Group Psychotherapy (now in its sixth edition) remains essential reading. His memoirs, The Gift of Therapy and Becoming Myself, offer accessible introductions. Yalom’s novel The Schopenhauer Cure dramatizes a therapy group with surprising fidelity to actual process.
Those interested in facilitating groups should seek formal training through graduate programs, post-degree certificates from organizations like the American Group Psychotherapy Association (AGPA), or intensive training institutes. Group facilitation requires distinct skills—managing multiple relationships, tracking process, tolerating ambiguity—that individual therapy training does not fully address.