Testing predictions from the memory and identity theory of ICD-11 complex posttraumatic stress disorder: Measurement development and initial findings.

BACKGROUND: The 'Memory and Identity Theory' of ICD-11 Complex Posttraumatic Stress Disorder (CPTSD) was recently published but has not yet been subjected to empirical testing. The objective of this study was to evaluate newly developed measures of memory and identity disturbances and test hypothesized structural relations between these constructs and CPTSD symptoms. METHODS: Self-report data were collected from a nationwide sample of adults living in Ukraine (N = 2050) in September 2023. Exploratory factor analysis was used to assess the latent structure of the newly developed measures, and structural equation modeling was used to test the associations between memory and identity disturbances and CPTSD symptoms. RESULTS: 90 % of participants experienced a lifetime trauma, and 9.2 % screened positive for ICD-11 CPTSD. Results indicated that the newly developed measures of memory and identity problems possessed satisfactory psychometric properties, and all but one of the model-implied structural associations were observed. CONCLUSION: This study provides initial empirical support for the Memory and Identity theory of ICD-11 CPTSD, indicating that the basis of this disorder lies in distinct memory and identity processes. Several effects not predicted by the theory were observed, and these can provide the basis for further model testing and refinement.

Reconceptualizing complex posttraumatic stress disorder: A predictive processing framework for mechanisms and intervention.

In this article, we introduce a framework for interpreting Complex Posttraumatic Stress Disorder (C-PTSD) through predictive processing, a neuroscience concept explaining the brain's interpretation and prediction of sensory information. While closely related to PTSD, C-PTSD encompasses additional symptom clusters marked by disturbances in self-organization (DSO), such as negative self-concept, affect dysregulation, and relational difficulties, typically resulting from prolonged traumatic stressors. Our model leverages advances in computational psychiatry and neuroscience, offering a mechanistic explanation for these symptoms by illustrating how prolonged trauma disrupts the brain's predictive processing. Specifically, altered predictive mechanisms contribute to C-PTSD's symptomatology, focusing on DSO: (1) Negative self-concept emerges from maladaptive priors that bias perception towards self-criticism, misaligning expected and actual interoceptive states; (2) Misalignment between predicted and actual interoceptive signals leads to affect dysregulation, with sensitivity to bodily cues; and (3) Relationship challenges arise from skewed social prediction errors, fostering mistrust and withdrawal. This precision-focused approach sheds light on the dynamics underpinning C-PTSD and highlights potential intervention targets aimed at recalibrating the predictive processing system.

A Systematic Review of the Assessment of ICD-11 Complex Post-Traumatic Stress Disorder (CPTSD) in Young People and Adults.

Complex post-traumatic stress disorder (CPTSD) was introduced in the International Classification of Diseases (ICD) 11 in 2013 to simplify diagnosis and increase clinical utility. Given the recent ICD-11 conceptualisation, there is no standard approach for its assessment, and a review of research is necessary. This systematic review focuses on ICD-11 CPTSD assessment in young people aged 7 to 17 and adults aged 18 and above, examining measures, differentiating features and clinical considerations. Data from five databases are reviewed using a narrative synthesis approach and the quality of evidence is assessed and discussed. A total of 36 studies involving 5901 participants recruited from clinical settings and 1458 professionals with CPTSD assessment experience were included. Studies predominantly focused on adults, and the most used measure for assessment was the International Trauma Questionnaire. Papers focusing on differentiating features highlighted increased symptom severity, impairment and difficulties in individuals with CPTSD, compared to those with PTSD across various characteristics in both young people and adults. This review also identified the importance of a sensitive clinical approach with adaptations based on culture and age. Although gold-standard recommendations cannot be made, this paper offers tentative clinical practice recommendations and considerations regarding ICD-11 CPTSD assessment.

Types of childhood maltreatment as predictors of posttraumatic stress disorder severity and complex posttraumatic stress disorder in patients with substance use disorders.

Background: Childhood maltreatment (CM) can be divided into: emotional abuse (EA), physical abuse (PA), sexual abuse (SA), emotional neglect (EN), and physical neglect (PN). CM is associated with (Complex)Posttraumatic stress disorder (PTSD/CPTSD) and substance use disorder (SUD).Objective: This cross-sectional study examined the relationships between CM-subtypes with PTSD-severity and CPTSD in patients with SUD-PTSD.Method: Participants (N = 209) were treatment-seeking SUD-PTSD patients who completed the Childhood Trauma Questionnaire-short form, the Clinician-Administered PTSD Scale for DSM-5 and the International Trauma Questionnaire. Regression analyses and a model selection procedure to select an optimal model were used to examine CM-subtypes as predictors of (C)PTSD, adjusted for sex and age.Results: Total CM and all CM-types significantly predicted PTSD-severity in the univariate regression analysis, with EA begin the strongest predictor. In the multiple regression only SA predicted PTSD-severity. Subsequently, model selection indicated that the optimal model to predict PTSD-severity included EA and SA. In the univariate analyses total CM, EA, and PN significantly predicted CPTSD-classification, and total CM and all CM-types significantly predicted CPTSD-severity. In the multiple regression for CPTSD-classification only EA and PA were significant predictors and for CPTSD-severity EA, PA and SA were significant predictors. In post-hoc multiple regression analyses, only EA was a significant predictor of CPTSD-classification and CPTSD-severity. Finally, in the model selection the most parsimonious model only included EA for both CPTSD-classification and CPTSD-severity. Sex was not a moderator in the relationship between CM and PTSD, nor in CM and CPTSD.Conclusions: These findings indicate that for SUD-PTSD patients, several CM-types have predictive value for (C)PTSD-severity, however SA and especially EA appear to contribute to these complaints. Since EA does not constitute an A-criterion, it is generally more overlooked in PTSD treatment. Its impact should therefore be underlined, and clinicians should be attentive to EA in their treatment.

All types of Childhood Maltreatment are associated with PTSD severity.Emotional Abuse and Sexual Abuse are most predictive for PTSD severity.Emotional Abuse is most predictive for CPTSD classification and symptom severity.

[Effects of complex trauma disorder on the workplace: a scoping review]. / Auswirkungen der komplexen Traumafolgestörung auf die Arbeitswelt: Ein Scoping-Review.

BACKGROUND: The "International Classification of Diseases 11th Revision" (ICD-11) introduces complex post-traumatic stress disorder (CPTSD) as a separate diagnosis to account for the effects that persistent or repetitive trauma can have. In CPTSD, disorders of self-organization are added to the core symptoms of PTSD. It can be assumed that those affected are impaired in their professional lives as a result. The aim of this paper is to provide an overview of the effects of CPTSD on work-related functioning and to present possible consequences for therapeutic and rehabilitative treatment. METHOD: A scoping review with a literature search in the MEDLINE, APA PsycArticles, and APA PsycInfo databases was conducted in February 2024. RESULTS: Of 2378 studies on KPTBS, five studies were included, of which only three dealt more specifically with the impact on the world of work. Those affected appear to have a poorer prognosis for maintaining their ability to work and are therefore to be regarded as a socio-medical risk group with regard to long-term maintenance of participation in working life. DISCUSSION: The current state of research on the effects of the CPTSD symptom complex on the world of work is surprisingly limited. In comparison, the results indicate that CPTSD has a greater negative impact on the ability to function in the world of work than PTSD and other mental disorders. It is still unclear which psychopathological mechanisms mediate the connection. Only basic findings on the psychopathology of CPTSD are available. Treatment approaches that address the disorders of self-organization in addition to PTSD symptoms appear necessary.

Retrospective ACEs predict complex PTSD symptoms in a large sample of Chinese young adults longitudinally: the moderating role of self-compassion.

This longitudinal study in Mainland China (2021-2022) explored the impact of adverse childhood experiences (ACEs) on complex posttraumatic stress disorder (CPTSD) symptoms, with a focus on the role of self-compassion. Among 18,933 surveyed university students, 21.2% reported experiencing at least one ACE. Results revealed a clear relationship between ACEs and CPTSD symptoms. Furthermore, self-compassion, particularly the dimensions of self-judgment and isolation, moderated the association between retrospective ACEs and posttraumatic stress disorder (PTSD) and disturbance in self-organization (DSO) symptoms. These findings highlight the enduring impact of ACEs on CPTSD symptoms and emphasize the importance of early identification and targeted interventions, especially addressing self-judgment and isolation, to mitigate CPTSD risk among young Chinese adults.

Healing wounded trees: clinicians' perspectives on treatment of complex posttraumatic stress disorder.

While treatment guidelines agree on the first-line interventions for the treatment of posttraumatic stress disorder (PTSD), there is an ongoing debate between experts regarding the treatment of complex posttraumatic stress disorder (C-PTSD). As scientific research is slowly emerging, different treatment approaches are used in clinical practice This article aims to provide a set of treatment options for C-PTSD in adult survivors of repeated exposure to severe violence and abuse, both in childhood and later on in life. The developmental-contextual perspective on mental health forms the basis of this approach. This perspective is elaborated using the tree metaphor. Then, several treatment strategies are suggested. The presented strategies are a combination of the existing evidence-based approaches for the treatment of PTSD and personality disorders. They target psychological damage in survivors while taking their developmental trajectories and ecological environments into consideration. The treatment model presented is based on longstanding clinical practice and it may be a promising framework for treating C-PTSD. However, it still needs to be scientifically examined for acceptability and effectiveness.

Contemporaneous and temporal network analysis of complex Posttraumatic stress disorder among Chinese college students with Childhood adversity: A longitudinal study.

OBJECTIVE: To enhance understanding of the longitudinal progression of complex posttraumatic stress disorder (CPTSD) symptoms, this longitudinal study examined how CPTSD symptoms interact over time in Chinese college students with childhood trauma. METHODS: From 18,933 college students who took part in two surveys 12 months apart, 4,006 participants who reported adverse childhood experiences were screened. Cross-sectional network comparisons and cross-lagged panel network (CLPN) analysis characterized interactions among CPTSD symptoms. RESULTS: In the cross-sectional networks, feeling like a failure and avoid activities reminiscent of the trauma were the central symptoms. Takes long time to calm down and exaggerated startle are important bridge symptoms in the two networks respectively. The comparison of cross-sectional networks indicates that the global network strength was stable. The findings of the CLPN model reveal that feel worthless and feel like a failure had the highest "out" expected influence; exaggerated startle and avoid thoughts and feelings about the trauma had the highest "in" expected influence. CONCLUSIONS: By conducting cross-sectional network analyses, the study illuminated the attributes of CPTSD networks across various time points. Additionally, the CLPN analysis uncovered the longitudinal patterns of CPTSD symptoms.

Improvements of complex post-traumatic stress disorder symptoms during a multimodal psychodynamic inpatient rehabilitation treatment - results of an observational single-centre pilot study.

Background: Complex post-traumatic stress disorder (CPTSD) describes chronic disturbances in self-organization (i.e. affect dysregulation; negative self-concept; severe difficulties in relationships) which are frequently observed in survivors of prolonged, repeated or multiple traumatic stressors. So far, evidence of psychodynamic treatment approaches for CPTSD is scarce.Methods: In this single-centre observational pilot study, symptom change during a 6-week psychodynamic inpatient treatment in a multimodal psychosomatic rehabilitation centre was evaluated using repeated measures analyses of variance (ANOVAs). Patients completed questionnaires on PTSD and CPTSD symptoms (ITQ), anxiety, depression and somatization (BSI-18), functional impairment (WHODAS) and epistemic trust, mistrust and credulity (ETMCQ) before (T1) and at the end of treatment (T2). A hierarchical linear regression analysis was calculated to identify factors associated with improved CPTSD symptoms.Results: A total of n = 50 patients with CPTSD were included in the study, of whom n = 40 (80%) completed treatment. Patients reported a significant reduction of CPTSD symptoms during treatment with a large effect size (-3.9 points; p < .001; η2 = .36), as well as a significant reduction of psychological distress (p < .001; η2 = .55) and functional impairment (p < .001; η2 = .59). At the end of treatment, 41.0% of patients no longer fulfilled the diagnostic criteria for CPTSD. Changes in epistemic stance included improved epistemic trust (ß = -.34, p = .026) and decreased epistemic credulity (ß = .37, p = .017), which together with lower age (ß = .43, p = .012) and lower depression levels at baseline (ß = .35, p = .054) were significantly associated with baseline adjusted mean change of CPTSD symptoms during therapy and explained 48% of its variance.Discussion: In our study, patients reported a significant reduction of CPTSD symptoms and comorbid symptoms during a multimodal psychodynamic inpatient rehabilitation treatment. Improved epistemic trust may facilitate the establishment of a trusting therapeutic relationship, thus fostering an environment of openness for knowledge transfer (i.e. social learning) and the exploration of diverse viewpoints and perspectives in the therapeutic process.

Complex post-traumatic stress disorder (CPTSD) is a condition often found in individuals who have experienced severe trauma, such as childhood abuse or torture.A study involving 50 patients with CPTSD showed significant improvements in symptoms and overall quality of life after undergoing a 6-week integrative multimodal psychodynamic inpatient rehabilitation treatment.The study also highlighted that improvement in epistemic trust could be a potential mechanism of change contributing to the positive therapeutic outcomes.

Tracing the paths: a systematic review of mediators of complex trauma and complex post-traumatic stress disorder.

Complex trauma is associated with complex-posttraumatic stress disorder (CPTSD). While dissociative processes, developmental factors and systemic factors are implicated in the development of CPTSD, there are no existing systematic reviews examining the underlying pathways linking complex trauma and CPTSD. This study aims to systematically review evidence of mediating factors linking complex trauma exposure in childhood (birth to eighteen years of age) and subsequent development of CPTSD (via self-reports and diagnostic assessments). All clinical, at-risk and community-sampled articles on three online databases (PsycINFO, MedLine and Embase) were systematically searched, along with grey literature from ProQuest. Fifteen articles were eligible for inclusion according to pre-determined eligibility criteria and a search strategy. Five categories of mediating processes were identified: 1) dissociative processes; 2) relationship with self; 3) emotional developmental processes; 4) social developmental processes; and 5) systemic and contextual factors. Further research is required to examine the extent to which targeting these mediators may act as mechanisms for change in supporting individuals to heal from complex trauma. Systematic review registration: https://www.crd.york.ac.uk/PROSPERO/, identifier CRD42022346152.

Variations in services and intervention pathways for traumatic stress in Welsh prisons: A national survey.

Both Post-Traumatic Stress Disorder and Complex Post-Traumatic Stress Disorder are prevalent in prison settings. Both often go undetected and untreated, while prisoners who already suffered previous trauma may be re-traumatised upon imprisonment. The current study aimed to conduct a national survey of all Welsh prisons to gather information about existing services and treatments for traumatic stress. The survey identified variation within Welsh prisons with regard to NICE-recommended evidence-based therapies. It is therefore recommended that there needs to be development of a pathway of Post-Traumatic Stress Disorder and Complex Post-Traumatic Stress Disorder in the prison system which should be achieved through a consensus process of both frontline staff and experts in the field.

The Impact of Complex PTSD on Suicide Risk in Patients with Bipolar Disorder: A Cross-Sectional Study.

BACKGROUND: Patients with bipolar disorder (BD) are more likely than the general population to experience traumatic events, particularly during childhood, and these may predict and be a risk factor for the development of complex PTSD (cPTSD). The presence of multiple traumas plays a relevant role from a psychopathological point of view, but little is known about the effect this may have on suicide attempts in patients with BD. METHODS: A cross-sectional study was conducted comparing socio-demographic and clinical characteristics, recruiting 344 patients diagnosed with BD I and II, screened for the presence (or absence) of cPTSD using the International Trauma Questionnaire (ITQ). Suicide attempts were assessed directly during the clinical interview and from the patient's medical record. RESULTS: The results emerging from the study indicate that cPTSD can be considered a risk factor for suicide attempts in patients with BD. Furthermore, evidence is provided to support the idea that cPTSD is highly prevalent in patients with BD and is related to a higher psychopathological burden. CONCLUSIONS: The results recommend an urgent and comprehensive assessment of suicidal risk in patients with comorbidity of both bipolar disorder and cPTSD. There is a crucial demand for early intervention initiatives and proactive prevention strategies to address the intricate intersection of these mental health challenges.

Predicting post-traumatic stress disorder: The complex relationship between burnout, intentions to leave and emotional support among health care professionals.

BACKGROUND: Health care professionals working in delivery rooms often encounter stressful situations. Understanding their challenges and the support they receive is essential for improving their well-being and consequently patient care. PURPOSE: Examining the relationship between burnout, intentions to leave, post-traumatic stress disorder (PTSD) symptoms, and complex PTSD among health care professionals, and identifying their predictors. METHODS: A mixed methods design, including a survey among 196 midwives and gynecologists assessing burnout, intentions to leave, exposure to negative work experiences and PTSD, as well as 15 semi-structured interviews. DISCUSSION: Most participants experienced multiple difficult events in the delivery room, reporting insufficient emotional support. Burnout and lack of emotional support were significant predictors of PTSD symptoms. Participants expressed a need for emotional support to cope with complex situations. CONCLUSION: Burnout among midwives must be addressed through prevention and intervention programs. Emotional support is essential in mitigating PTSD symptoms among midwives and gynecologists, enhancing their resilience and well-being.

Exploring trauma exposure and post-traumatic stress in university students of different identity statuses in Lithuania and Japan.

Emerging adulthood is the time when identity questions are addressed. It is also a time of excessive stress and risk for mental health problems. Different identity statuses relate to different mental health outcomes. Yet, little research has addressed how identity status is interlinked with trauma exposure and post-traumatic stress reactions, especially in multicultural contexts. The current study aimed to explore whether different traumatic experiences are related to the current identity status of university students aged between 18 and 29 years and investigate to what extent trauma-exposed emerging adults of different identity statuses report symptoms of post-traumatic stress disorder (PTSD) and complex PTSD (CPTSD). In total, 2237 university students from Lithuania (n = 791) and Japan (n = 1345) participated in the current study. Identity profiles were revealed by using the Latent Class Analysis approach. Lithuania and Japan were comparable in terms of identity profiles and structure of PTSD/CPTSD. Trauma-exposed emerging adults reported a higher probability of being in troubled diffusion identity status; students in achievement identity status had a lower probability of CPTSD and lower rates of symptoms of disturbances in self-organization. The diffused identity of emerging adults from Lithuania and Japan is associated with trauma exposure, and positive identity is linked with fewer CPTSD reactions.

Integration of limbic self-neuromodulation with psychotherapy for complex post-traumatic stress disorder: treatment rationale and case study.

Treatment Rationale: Exposure to repeated sexual trauma, particularly during childhood, often leads to protracted mental health problems. Childhood adversity is specifically associated with complex posttraumatic stress disorder (PTSD) presentation, which is particularly tenacious and treatment refractory, and features severe emotion dysregulation. Augmentation approaches have been suggested to enhance treatment efficacy in PTSD thus integrating first-line psychotherapy with mechanistically informed self-neuromodulation procedures (i.e. neurofeedback) may pave the way to enhanced clinical outcomes. A central neural mechanism of PTSD and emotion dysregulation involves amygdala hyperactivity that can be volitionally regulated by neurofeedback. We outline a treatment rationale that includes a detailed justification for the potential of combining psychotherapy and NF and delineate mechanisms of change. We illustrate key processes of reciprocal interactions between neurofeedback engagement and therapeutic goals.Case Study: We describe a clinical case of a woman with complex PTSD due to early and repetitive childhood sexual abuse using adjunctive neurofeedback as an augmentation to an ongoing, stable, traditional treatment plan. The woman participated in (a) ten sessions of neurofeedback by the use of an fMRI-inspired EEG model of limbic related activity (Amygdala Electrical-Finger-Print; AmygEFP-NF), (b) traditional weekly individual psychotherapy, (c) skills group. Before and after NF training period patient was blindly assessed for PTSD symptoms, followed by a 1, 3- and 6-months self-report follow-up. We demonstrate mechanisms of change as well as the clinical effectiveness of adjunctive treatment as indicated by reduced PTSD symptoms and improved daily functioning within this single case.Conclusions: We outline an integrative neuropsychological framework for understanding the unique mechanisms of change conferring value to conjoining NF applications with trauma-focused psychotherapy in complex PTSD.

Self-neuromodulation procedures that regulates limbic-related activity in adjunction to therapy show clinical effectivity in complex PTSD.We present an integrative perspective of neurofeedback embedded in psychotherapy, illustrated by a single case report.A single case provides an illustration of the potential utility of multifaced treatment including psychotherapy with adjunctive neurofeedback.

Sex Differences in the Relationship Between School Bullying Victimization and Complex Posttraumatic Stress Disorder: The Roles of Insecure Attachment.

School bullying victimization is a highly concerning issue that can lead to a range of negative outcomes. Despite the research showing a significant association between bullying victimization and complex posttraumatic stress disorder (CPTSD), the internal mechanisms with its two components (i.e., posttraumatic stress disorder symptoms [PTSD] and disorders of self-organization symptoms [DSO]) remain unclear. Previous studies have indicated that attachment style may influence the development of CPTSD symptoms and that there may be sex differences in attachment styles. Thus, the present study aims to examine the mediating role of insecure attachment between school bullying victimization and CPTSD symptoms in males and females. The study assessed bullying victimization, attachment orientation, and CPTSD (i.e., PTSD symptoms and DSO symptoms) symptoms in 675 college students (65.2% females; Mage = 19.6, SD = 1.34) from China who had reported bullying experiences at two different time points, 6 months apart. For females, school bullying victimization predicted PTSD and DSO symptoms through attachment anxiety and only predicted DSO symptoms through attachment avoidance. For males, we found that school bullying victimization predicted PTSD symptoms through attachment avoidance. These findings suggest that attachment is critical in understanding how school bullying victimization may lead to CPTSD symptoms among individuals of different sexes.

Clients' experiences with a Trauma-sensitive mindfulness and compassion group intervention: a first-person perspective on change and change mechanisms.

Background: Trauma-related symptoms are common and there is a need for treatment interventions targeting underlying core vulnerabilities regardless of the client's diagnosis. Mindfulness and Compassion interventions have shown promising results in trauma treatment. However, little is known of how clients experience such interventions. Objective: This study describes clients' experiences of change after participating in a transdiagnostic group intervention, Trauma-sensitive Mindfulness and Compassion Group (TMC). Method: All 17 participants from two TMC groups were interviewed within one month of completing treatment. Transcripts were analysed using reflexive thematic analysis with a focus on how the participants experienced change and change mechanisms. Results: Three main themes of experienced change were developed: Becoming empowered; A new relationship to oneself and one's body; and Gaining more freedom in relationships and life. Four main themes were developed to capture clients' experiences of change mechanisms: New perspectives give understanding and hope; Accessing tools facilitates agency; Significant moments of awareness open up to new possibilities, and Circumstances in life that facilitate change. Conclusion: We discuss and reflect upon participants' experiences of the effects of participating in a TMC group and the mental and emotional costs of doing the work and present a broader perspective on change processes overall.

Trajectories of complex posttraumatic stress symptoms among Chinese college students with childhood adversities: The role of self-compassion.

BACKGROUND: Complex posttraumatic stress disorder (CPTSD) is associated with severe impairments in psychosocial functions, but related longitudinal research is limited. To promote the mental health of college students with childhood adversities, it is imperative to investigate the development of CPTSD symptoms and the predictive factors. OBJECTIVES: The study aimed to examine the latent trajectories of CPTSD symptoms among college students with childhood adversities and to identify the role of self-compassion in differentiating potential trajectories. METHODS: A total of 294 college students with childhood adversities completed self-report questionnaires on demographic backgrounds, childhood adversities, CPTSD symptoms, and self-compassion three times with an interval of three months. Latent class growth analysis was used to determine the trajectories of CPTSD symptoms. Multinomial logistic regression was performed to examine the association between self-compassion and trajectories subgroups while adjusting for demographic variables. RESULTS: Three heterogeneous groups of CPTSD symptoms among college students with childhood adversities were identified: the low-symptoms group (n = 123, 41.8 %), the moderate-symptoms group (n = 108, 36.7 %), and the high-risk group (n = 63, 21.4 %). Multinomial logistic regression showed that, after adjusting for demographic variables, students with higher levels of self-compassion were less likely to belong to the moderate-symptoms and high-risk group in comparison to the low-symptoms group. CONCLUSIONS: The results suggest the trajectories of CPTSD symptoms of college students with childhood adversities were heterogeneous. Self-compassion was a protective factor against the development of CPTSD symptoms. The present study provided insights into the mental health promotion for individuals with adversities.

Feasibility, acceptability and clinical benefit of a trauma-focused stabilisation group for post-traumatic stress disorder patients with complex presentations on primary care waitlists.

BACKGROUND: Large numbers of people showing complex presentations of post-traumatic stress disorder (PTSD) in the NHS Talking Therapies services routinely require multi-faceted and extended one-to-one National Institute of Clinical Excellence (NICE) recommended treatment approaches. This can lead to longer waits for therapy and prolong patient suffering. We therefore evaluated whether a group stabilisation intervention delivered to patients on the waitlist for individual trauma-focused psychological treatment could help address this burden. AIMS: The study aimed to ascertain a trauma-focused stabilisation group's acceptability, feasibility, and preliminary clinical benefit. METHOD AND RESULTS: Fifty-eight patients with PTSD waiting for trauma-focused individual treatment were included in the study. Two therapists delivered six 5-session groups. The stabilisation group was found to be feasible and acceptable. Overall, PTSD symptom reduction was medium to large, with a Cohen's d of .77 for intent-to-treat and 1.05 for per protocol analyses. Additionally, for depression and anxiety, there was minimal symptom deterioration. CONCLUSIONS: The study provided preliminary evidence for the acceptability, feasibility and clinical benefit of attending a psychoeducational group therapy whilst waiting for one-to-one trauma therapy.