Changes in Traumatic Memories and Posttraumatic Cognitions Associate with PTSD Symptom Improvement in Treatment of Multiply Traumatized Children and Adolescents

Underlying mechanisms of change in the effects of cognitive behavior therapy on posttraumatic stress disorders among Chinese children: Results from a randomized controlled trial

BACKGROUND

Evidence for the effectiveness of group-based trauma-focused cognitive behavior therapy (TF-CBT) has existed, but little is known about how group-based TF-CBT works in the treatment of children with PTSD. The purpose of the present study is to explore the mediators for the reduction of PTSD severity in group-based TF-CBT.

METHOD

We analyzed data from a randomized controlled trial conducted in China. In this trial, 234 children with PTSD were randomly assigned to the TF-CBT group or the treatment as usual (TAU) group. The primary outcome (reduction in severity of PTSD symptoms) and possible mediators (trauma memory quality, emotion regulation strategies, and resilience) were assessed at baseline and posttreatment. The mediation analysis was performed to investigate the indirect effects of possible mediators on treatment outcomes.

RESULTS

The mediation model revealed that changes in trauma memory quality, maladaptive emotion regulation strategies, and resilience mediated the relationship between the group (TF-CBT vs. TAU) and PTSD at post-treatment. Adaptive emotion regulation strategies were not a key mechanism underlying PTSD reduction in group-based TF-CBT.

CONCLUSION

Group-based TF-CBT might affect PTSD by reducing risk factors, like trauma memory quality and maladaptive emotion strategies. Group-based TF-CBT also might affect PTSD by increasing protective factors, like resilience. Thus, monitoring these mediators throughout treatment might be an important factor in optimizing treatment outcomes.

A systematic review of literature examining mediators and mechanisms of change in empirically supported treatments for posttraumatic stress disorder

Despite the availability of empirically supported treatments (ESTs) for posttraumatic stress disorder (PTSD), relatively little is known regarding these treatments' mechanisms of change. This systematic review moves beyond previous reviews by summarizing the findings and reviewing the methodological quality of literature that specifically examined mediators/mechanisms of change in ESTs for PTSD. Studies were included if they were written in English, empirical, peer-reviewed, claimed to study mediators/mechanisms of a recommended PTSD treatment, measured the mediator/mechanism during or before and after treatment, and included a posttreatment PTSD or global outcome (e.g., functioning). PsycINFO and PubMed were searched on October 7, 2022. Two coders screened and coded studies. Sixty-two eligible studies were identified. The most consistent mediator/mechanism was reduction in negative posttraumatic cognitions, followed by between-session extinction and decreased depression. Only 47% of studies measured the mediator/mechanism before the outcome and measured the mediator/mechanism and outcome at least three times, and 32% also used growth curve modeling to establish temporal precedence of change in the mediator/mechanism and outcome. Many of the mediators/mechanisms examined had weak or no empirical support. Results highlight the need for improved methodological rigor in treatment mediator and mechanism research. Implications for clinical care and research are discussed. PROSPERO ID: 248088.

The effectiveness of therapeutic interventions on psychological distress in refugee children: A systematic review

OBJECTIVE

To systematically review existing research exploring the effectiveness of psychological interventions in reducing symptoms of distress amongst refugee and asylum-seeker children.

METHOD

Six databases were searched to identify English studies presenting original empirical quantitative data (published before September 2022) testing the efficacy of psychological interventions for children from refugee and asylum-seeking backgrounds. Quality of studies were assessed through the Appraisal Tool for Cross-Sectional Studies as well as the Cochrane Risk of Bias Tool. Relevant data were extracted to facilitate a narrative synthesis.

RESULTS

Seventy-one eligible articles were identified (n > 10,000). A number of cognitive-behavioral, psychosocial, and trauma-focused interventions that catered specifically to children and their families were identified. A synthesis of these results suggest that interventions may assist in the reduction of various psychopathologies, although the effects were mixed across intervention types.

CONCLUSIONS

While the review yielded promising findings, most findings were derived from small pilot and empirical studies, leading to difficulties with drawing conclusions. There remains a need for studies using more rigorous research methodologies to expand and ratify this valuable knowledge base.

CLINICAL SIGNIFICANCE

 Forced displacement is at an all-time high. Many children are being forced to seek asylum and refuge, and they become vulnerable to the development of poor mental health, with limited understanding surrounding how to appropriately intervene. This review aims to equip clinicians with increased knowledge and confidence in working therapeutically alongside clients from refugee or asylum-seeking background, with the goal of fostering positive mental health and wellbeing.

Measuring Traumatic Reactions in Palestinian Children: A Psychometric Assessment of the Children Revised Impact of Event Scale-Arabic Version (CRIES-13A)

The aim of the present study was to test the measurement model and measurement invariance of the Impact of Event Scale (Arabic version) in a large sample of Palestinian children. We estimated (Study 1; n = 610) the measurement model using confirmatory factor analysis. In Study 2 (n = 864), we conducted multigroup (girls and boys) tests of measurement invariance. We pooled the data collected from the participants in the first two studies (Study 3, N = 1474) to assess overall score reliability, as well as the IES' convergent and divergent validity vis-à-vis other measures of child wellbeing and mental health. The outcomes of the statistical analyses supported an invariant 13-item measurement model (intrusion, avoidance, and hyperarousal) for CRIES-13A. Intrusion and hyper-arousal together made up a first-order domain of symptoms (re-experiencing). The combined findings of these studies suggest that the CRIES-13A displays robust psychometric properties and may be used in contexts of military violence.