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Janis, R.A., Burlingame, G.M., Svien, H., Jensen, J. & Lundgreen, R. (2020): Group therapy for mood disorders: A meta-analysis, Psychotherapy Research, DOI: 10.1080/10503307.2020.1817603

Mood disorders are common mental health problems, with a 12-month prevalence of 7% in the population for major depressive disorder (MDD). Researchers have tested group therapy as a treatment for MDD and bipolar disorder. Recently, the American Psychological Association added group therapy as a specialty, attesting to the empirical evidence of group therapy’s efficacy and also the need for specialized education and training. Despite this, some treatment guidelines do not list group therapy as a first line therapy for major depression. Over the past 10 years, an international group of researchers have conducted a number of meta-analyses on the efficacy of group therapy for many disorders. In this particular meta-analysis, Janis and colleagues assessed the efficacy of group therapy to treat mood disorders by looking at randomized controlled trials of group therapy compared to waitlist controls, treatment as usual, and anti-depressant medications. They identified 42 randomized controlled trials of group therapy for mood disorders that included almost 3,000 patients. Treatment orientations included CBT, DBT, psychodynamic, and interpersonal therapies. For primary outcome measures of depressive symptoms at post treatment, the effect of group therapy versus waitlist controls was large and significant (g = .86, 95% CI [.66, 1.06], p < .001, k = 9), and those receiving group treatment were 6.81 times more likely to recover compared to those waiting for treatment (95% CI [3.70, 12.55]). Group therapy also resulted in better outcomes than treatment as usual on primary outcome measures of depression at post treatment with a medium sized effect (g = 0.46, 95% CI [0.22, 0.87], p < .001, k = 11), and those receiving group therapy were 2.75 times more likely to recover than those receiving treatment as usual (95% CI [1.59, 4.72]). Finally, there was no significant difference between group therapy and medications on rate of change in depressive symptoms or on rates of recovery.

Practice Implications

Overall, group therapy was more effective than no treatment and treatment as usual for major depression symptoms. Group therapy was as effective as anti-depressant medications. Group therapy is likely more cost effective because it is a multi-person treatment. Many patients do not respond to medications or they struggle with medication adherence because of unpleasant side effects. And most patients prefer psychotherapy to medications if given the choice. And so, group therapy provides a cost-effective alternative and should be considered as a first line treatment for depression. As indicated by the American Psychological Association’s recognition of group therapy as a specialty, providing group therapy requires specialized education and training in order to offer effective care. Continuing education opportunities exist with the Society of Group Psychology and Group Psychotherapy and with the American Group Psychotherapy Association.

McLaughlin, S.P.B., Barkowski, S., Burlingame, G.M., Strauss, B., & Rosendahl, J. (2019). Group psychotherapy for borderline personality disorder: A meta-Analysis of randomized-controlled trials. Psychotherapy. Advance online publication. http://dx.doi.org/10.1037/pst0000211

Borderline personality disorder (BPD) is characterized by fear of abandonment, unstable intense relationships, rapid changes in identity and self-image, impulsivity, wide mood swings, periods of intense anger, and ongoing feelings of emptiness. These symptoms sometimes lead to suicidal behavior or non-suicidal self-injury. Often, those with BPD report a very stressful childhood that included sexual and/or physical abuse, and neglect. Borderline personality disorder is the most common of the personality disorders and is associated with severe social psychological impairment such that those with BPD often have unstable employment, are involved in abusive relationships, and engage in risky behaviors. A diagnosis of BPD is also associated with a high rate of mortality due to suicide. Practice guidelines indicate that psychotherapy is a key component to the treatment of BPD. Two psychological treatment approaches that incorporate group interventions are dialectical behavior therapy (DBT) and mentalization-based treatment (MBT). In DBT patients learn specific skills to alter maladaptive ways of regulating emotions in a group context. In MBT, an attachment-based treatment, the focus is on building trust in others through group interactions that generalize to other social relationships. In this meta-analysis, McLaughlin and colleagues reviewed 24 studies that compared group treatment for BPD to treatment as usual, which included a variety of interventions like supportive groups, pharmacotherapy, individual therapy, and others. Some of the treatments for BPD were stand-alone groups and some groups were part of a larger comprehensive program. Participants attended between 12 and 130 sessions, and group size ranged from 4 to 12 members. The meta-analysis revealed that group treatment for BPD versus treatment as usual resulted in moderate to large effect on BPD symptoms: g = .72, CI: [.41, 1.04], p < .001. The effects of group treatment versus treatment as usual on suicidality produced a moderate effect, g = .46, CI: [.22, .71], p < .001. The authors reported similar results for secondary outcomes like depression, anxiety, and general mental health. Drop-out rates were similar between group treatments (26.26%) and treatment as usual (28.26%). There were no differences in the effects of group therapy orientations on any of the outcomes or on drop-out rates.

Practice Implications

The results of this meta-analysis indicated the value of group treatment for BPD not only for core symptoms and suicidality, but also for symptoms related to quality of life (depression, anxiety). Theoretical orientation did not explain any of the findings, suggesting that treatments like DBT and MBT in a group format are equally effective. Therapists and patients can feel confident that group treatment for BPD are among the most effective treatments available.

Author email: mclaughlin.stevie@gmail.com

Burlingame, G. M., McClendon, D. T., & Yang, C. (2018). Cohesion in group therapy: A meta-analysis. Psychotherapy, 55, 384-398.

Many writers consider group cohesion to be one of the most important concepts in group psychotherapy and that is a pre-requisite for positive patient outcomes. That is, patients in a group must feel a bond with the group and its members, must value the relationships in the group, and must see the group experience as a vehicle by which to achieve the change that they want. As Burlingame once noted, over time cohesion has become synonymous with the therapeutic relationship in group therapy. Although an important concept, cohesion has been elusive to define partly because of the complexity of group therapy itself. From the patient’s point of view, relationships in group therapy can take on three structural aspects in the form of member to member, member to group, and member to leader interactions. And so, cohesion may refer to the quality of the member’s relationship: to other members, to the group as a whole, and/or to the group leader. By “quality of group relationships”, clinicians and researchers often mean the positive affective bond (warmth, empathy, attraction, compatibility, trust) and working relationship (consensus on tasks and goals, willingness to work) that members have with other members, the group as a whole, and/or the group leaders. In this meta-analysis, Burlingame and colleagues identified 55 group therapy studies including over 6,000 patients that investigated the cohesion – outcome relationship. The average correlation of cohesion to patient outcomes in the 55 studies was statistically significant, r = .26 (95% CI [.20, .31], p = .01), suggesting a moderate effect. Leaders who had an interpersonal orientation had the highest cohesion – outcome relationship (r = .48), although leaders of other theoretical orientations also posted statistically significant but lower values. A greater group process orientation (r = .36), emphasizing greater interactions among group members (r = .36), composing groups of members with similar diagnoses or problems (r = .23), and groups lasting more than 20 sessions (r = .41) also each produced significantly higher cohesion – outcome correlations.

Practice Implications

The group cohesion – outcome relationship is highly reliable and suggests that clinicians of all theoretical orientations should routinely assess and enhance group cohesion to improve patient outcomes. Ways of increasing cohesion include emphasizing member to member interactions in a group, and discussing group processes as they occur. These processes may be related to members interacting with other members, with the group as a whole, or with the leader. In particular, group therapists should promote a positive emotional climate by handling conflict and avoidance when it arises in the group. This takes particular skills, training, and knowledge in group therapy processes, and so it is important for therapists to be aware of current practice guidelines for group therapy.

Author email: gary_burlingame@byu.edu

Jennissen, S., Huber, J., Ehrenthal, J.C., Schauenburg, H., & Dinger, U. (2018). Association between insight and outcome of psychotherapy: Systematic review and meta-analysis. The American Journal of Psychiatry. Published Online: https://doi.org/10.1176/appi.ajp.2018.17080847

For many authors, one of the purported mechanisms of change in psychotherapy is insight. In fact, the utility of insight for clients with mental health problems was first proposed over 120 years ago by Freud and Breuer. Briefly, insight refers to higher levels of self-understanding that might result in fewer negative automatic reactions to stress and other challenges, more positive emotions, and greater flexibility in cognitive and interpersonal functioning. Although insight is a key factor in some psychodynamic models, it also plays a role in other forms of psychotherapy. Experiential psychotherapy emphasises gaining a new perspective through experiencing, and for CBT insight relates to becoming more aware of automatic thoughts. Jennissen and colleagues defined insight as patients understanding: the relationship between past and present experiences, their typical relationship patterns, and the associations between interpersonal challenges, emotional experiences, and psychological symptoms. In this study, Jennissen and colleagues conducted a systematic review and meta analysis of the insight-outcome relationship, that is the relationship between client self-understanding and symptom reduction. They reviewed studies of adults seeking psychological treatment including individual or group therapy. The predictor variable was an empirical measure of insight assessed during treatment but prior to when final outcomes were evaluated. The outcome was some reliable and empirical measure related to symptom improvement, pre- to post- treatment. The review turned up 22 studies that included over 1100 patients mostly with anxiety or depressive disorders who attended a median of 20 sessions of therapy. The overall effect size of the association between insight and outcome was r = 0.31 (95% CI=0.22–0.40, p < 0.05), which represents a medium effect. Moderator analyses found no effect of type of therapy or diagnosis on this mean effect size, though the power of these analyses was low.

Practice Implications

The magnitude of the association between insight and outcome is similar to the effects of other therapeutic factors such as the therapeutic alliance. When gaining insight, patients may achieve a greater self-understanding, which allows them to reduce distorted perceptions of themselves, and better integrate unpleasant experiences into their conscious life. Symptoms may be improved by self-understanding because of the greater sense of control and master that it provides, and by the new solutions and adaptive ways of living that become available to clients.

Author email: Simone.Jennissen@med.uni-heidelberg.de

Grenon, R., Schwartze, D., Hammond, N., Ivanova, I., Mcquaid, N., Proulx, G., & Tasca, G. A. (2017). Group psychotherapy for eating disorders: A meta-analysis. International Journal of Eating Disorders. DOI: 10.1002/eat.22744

Group therapy has an evidence base indicating its efficacy for many disorders. Groups represent a social microcosm in which interpersonal factors that underlie psychological distress and symptoms can be effectively addressed. Group therapeutic factors include peer interpersonal feedback, social learning, emotional expression, and group cohesion. Theories of eating disorder symptoms include interpersonal problems and affect dysregulation as maintenance factors. Many treatment guidelines indicate that individual and group CBT are the treatments of choice for eating disorders. However, there are no meta analyses that specifically look at the efficacy of group therapy for eating disorders. In this study, Grenon and colleagues assess if: (a) group psychotherapy for eating disorders is efficacious compared to wait-list controls, (b) group therapy is effective compared to other active treatments (self help, individual therapy, medications), and (c) group CBT is more effective than other types of group therapy (group interpersonal therapy [GIPT], group psychodynamic-interpersonal psychotherapy [GPIP], or group dialectical behavior therapy [GDBT]). The authors reviewed 27 randomized controlled trials with over 1800 patients that provided direct comparisons of group therapy for eating disorders. The mean drop out rate from group therapy was 16.47% (SD = 13.46), which is similar to what is reported for psychotherapy trials in general. Group therapy was significantly more effective than wait list controls in achieving abstinence from binge eating and purging (RR = 5.51, 95% CI: 3.73, 8.12), decreasing the frequency of binge eating and/or purging (g = 0.70, 95% CI: 0.51, 0.90), and reducing related psychopathology (g = 0.49, 95% CI: 0.32, 0.66). Group psychotherapy had an overall rate of abstinence from binge eating of 51.38%, while wait-list control conditions had an overall abstinence rate of 6.51%. Similar findings were achieved a follow-ups. The effects of group psychotherapy and other active treatments (e.g., behavioral weight loss, self-help, individual psychotherapy) did not differ on any outcome at post-treatment or at follow-ups. Group CBT and other forms of group psychotherapy did not differ significantly on outcomes at any time point.

Practice Implications

The results add to a growing body of research that indicates that group psychotherapy is as effective as other treatments, including individual therapy, to treat mental disorders. Despite the fact that practice guidelines indicate that CBT is the treatment of choice for eating disorders, this meta analysis did not provide evidence that group CBT was more effective than other types of group treatments. Clinicians considering group interventions for eating disorders or other mental health problems will do well to make use of group therapeutic factors like interpersonal learning, peer feedback, emotional expression, and group cohesion to improve patient outcomes.

Schwartze, D., Barkowski, S., Strauss, B., Burlingame, G., Barth, J., & Rosendahl, J. (2017). Efficacy of group therapy for panic disorder: Meta-analysis of randomized controlled trials. Group Dynamics, 21, 77-93.

Panic disorder (PD) is characterized by recurrent episodes of intense fear or discomfort accompanied by physical and cognitive symptoms that may include sweating, trembling, or fear of dying. The panic attacks can lead to avoidant behavior that results in isolation, impaired functioning and lower quality of life. Often, those with PD also experience agoraphobia or an intense fear of having a panic attack in public, open spaces, or in a crowd. PD has a lifetime prevalence of 5% among adults in the US. Patients with PD use health care services at a higher rate than the general population, and those with PD may not receive adequate treatment. An evidence-based treatment for PD is cognitive behavioral therapy (CBT). Practice guidelines for PD recommend pharmacotherapy and psychotherapy with CBT. However, these practice guidelines do not take into account group therapy for PD. In this meta analysis, Schwartze and colleagues included group treatment studies of PD that were randomized controlled trials (RCT) and in which direct comparisons of group therapy to other treatments were conducted. RCTs of direct comparisons provide the best quality evidence of the efficacy of a treatment approach. The authors included 15 studies (14 of which were of group CBT for panic) that had 864 patients. There was a large significant effect on panic and agoraphobic symptoms favoring group over no-treatment controls (k = 9; g = 1.08; 95% CI [0.82, 1.34]; p = .001). Similar results were found for depressive symptoms and general anxiety symptoms. There was no significant difference between group and alternative PD treatments (pharmacotherapy, individual therapy) on the primary outcomes (k = 6; g = 0.18; 95% CI [-0.14, 0.49]; p = .264). Again similar results were found for depression and anxiety symptoms. In total 78% of patients with PD were symptom-free after group psychotherapy, compared with 33% in no-treatment control groups, and 71% in alternative treatment.

Practice Implications

The number of studies were small, but the results of this meta analysis indicate that group therapy is an effective treatment for PD and perhaps as effective as typical alternatives like pharmacotherapy and individual therapy. Group CBT protocols usually involve multiple components such as (a) education regarding the etiology and maintenance of PD, (b) cognitive restructuring (identifying and modifying panic-related cognitions), (c) exposure to external situations (in vivo exposure) or internal bodily sensations (interoceptive exposure), (d) relaxation training and/or breathing retraining. Group therapy may also provide a lower cost, more accessible, and possibly as effective treatment alternative than individual therapy for PD.