Group therapy is a psychotherapeutic method where one or more therapists facilitate sessions with multiple participants simultaneously. This approach is broadly accessible and can be found in settings such as private therapy offices, hospitals, mental health clinics, and community centres. While group therapy can be employed as a standalone treatment, it is frequently incorporated into a holistic treatment plan that also includes individual therapy sessions.

Types of group therapy

Group therapy is diverse, with different types tailored to address specific mental health conditions and using various therapeutic methods. Different types of group therapy include:

• Cognitive behavioural groups: These groups focus on recognising and altering distorted or inaccurate thinking patterns, emotional responses, and behaviours
• Interpersonal groups: These groups aim to improve participants' interpersonal relationships and social interactions, emphasising the role of social support and how relationships influence mental health
• Support groups: These provide emotional support and shared experiences for people facing various mental health issues, and they often extend support to family and loved ones as well
• Psychoeducational groups: Designed to educate participants about their mental health disorders and effective coping strategies, often incorporating techniques from cognitive-behaviour therapy (CBT)

Group sizes can vary, typically ranging from three to four participants, to larger groups of eight to 12, although some groups may include even more members. Sessions usually last an hour or two and occur once or twice a week, but the frequency can be higher.¹  Group therapy sessions can be either open or closed. Open sessions allow new members to join at any time, whereas closed sessions restrict participation to a set group of members who attend regularly.

Therapeutic principles of group therapy

Irvin D. Yalom identifies several core therapeutic principles derived from the self-reports of participants in group therapy:²

• Altruism: Group members contribute their strengths to support others, which in turn boosts their self-esteem and confidence
• Catharsis: Expressing emotions and experiences in a group can provide relief from pain, guilt, or stress
• Corrective recapitulation of the primary family group: The group dynamic mirrors aspects of a family. Within this setting, members can explore how their childhood experiences have shaped their personality and behaviours, and work on changing destructive or unhelpful patterns
• Development of socialisation techniques: Group therapy offers a safe and supportive environment to practice and refine new behaviours, minimising the fear of failure
• Group cohesiveness: The shared goal of the group fosters a sense of belonging and acceptance among its members
• Existential factors: While the group provides support, it also underscores individual responsibility for one's own life, actions, and choices
• Imparting Information: Members assist each other by sharing valuable knowledge and experiences.
• Imitative behaviour: Individuals can learn by observing and imitating the behaviours of others in the group, including the therapist
• Instillation of hope: Observing members at various stages of their journey gives newer participants hope and reassurance that progress is possible
• Interpersonal learning: Through interaction and feedback within the group, members gain deeper insights into themselves and their relationships
• Universality: Being part of a group with shared experiences helps members recognise that they are not alone in their struggles, and their experiences are common to many

These principles highlight the multifaceted benefits of group therapy and its potential to foster growth, understanding, and healing.

Applications of group therapy

Group therapy is an effective treatment approach for a broad spectrum of conditions, such as:³

• Attention-Deficit/Hyperactivity Disorder (ADHD)
• Depression
• Eating Disorders
• Generalised Anxiety Disorder
• Post-Traumatic Stress Disorder (PTSD)
• Substance Use Disorder
• Panic Disorder
• Phobias

Beyond these mental health issues, group therapy, especially when based on Cognitive Behavioral Therapy (CBT), has been shown to be beneficial for managing and coping with:⁴

• Anger management
• Chronic pain
• Grief and loss
• Weight management
• Divorce
• Chronic illness
• Chronic stress
• Domestic violence

This therapeutic approach provides support and strategies for individuals facing these challenges, promoting healing and personal growth.

Benefits of group therapy

Psychologists frequently observe that participants are pleasantly surprised by the enriching nature of the group experience.⁵

• Group therapy provides a robust support network and a platform for feedback. Fellow members often contribute helpful insights and practical suggestions for tackling tough situations or life challenges. They also help you stay accountable throughout your journey
• Engaging in regular conversations and actively listening to others allows you to see your own problems from a fresh perspective. Mental health struggles are common, yet many people hesitate to discuss them with those they don’t know well. You might feel isolated in your challenges, but group therapy reveals that you are not alone. Hearing others share their experiences can be incredibly comforting and validating
• Group therapy tends to be a cost-effective option. Since a therapist works with multiple clients simultaneously, they can allocate their time across a larger group. This shared approach significantly lowers the expense for each participant compared to individual sessions
• The diversity within group therapy is a significant asset. Members bring varied personalities and backgrounds, offering a rich tapestry of viewpoints. Observing how different people address their issues and achieve positive outcomes can introduce you to a broad spectrum of strategies for dealing with your own concerns

Effectiveness of group therapy

Group therapy has shown promising results, particularly for individuals dealing with depression. A study focused on group cognitive behavioural therapy (CBT) for depression revealed that 44% of participants experienced significant improvements. Despite these positive outcomes, the study also highlighted a notable dropout rate, with nearly 20% of participants discontinuing the treatment.⁶

According to an article from the American Psychological Association's Monitor on Psychology, group therapy meets the efficacy standards set by the Society of Clinical Psychology (Division 12 of the APA) for several mental health conditions, including:

• Bipolar disorder
• Panic disorder
• Obsessive-compulsive disorder (OCD)
• Substance use disorder
• Social phobia

Summary 

Overall, group therapy involves therapists working with multiple clients at once, and is accessible and effective across various settings, from private offices to community centers. It serves as both a standalone treatment and a complement to individual therapy. This versatile approach includes cognitive behavioural, interpersonal, support, and psychoeducational groups, each targeting specific mental health conditions.

Key therapeutic principles identified by Irvin D. Yalom, such as altruism, catharsis, and group cohesion, underscore its benefits. Additionally,  it is effective for conditions like ADHD, depression, PTSD, and more, group therapy fosters emotional support, diverse perspectives, and cost-efficiency. Despite some dropout rates, especially in depression treatments, its overall efficacy and acceptance for conditions like bipolar disorder, panic disorder, OCD, and social phobia are well-established.