Mid Sweden University

Background: Child maltreatment (CM), i.e. neglect and abuse of children by their caregivers, has been linked to reduced psychological safety and a sense of disrupted body boundaries (DBB), both of which have been proposed to impair social functioning. However, evidence-based interventions to increase psychological safety and to reduce DBB are lacking. Objectives: We conducted two experiments across two separate studies. Study I examined the effect of a brief (60-minute) body-oriented intervention, derived from Somatic Experiencing (SE), on psychological safety. Study II investigated the effect of the same intervention on DBB. Methods: In both studies, adults with varying levels of CM exposure, based on total self-report scores across subtypes, were randomized to an SE group or to a psychoeducation control group. Study I included participants with a lack of psychological safety (n = 89); Study II included participants with DBB (n = 55). Results: In Study I, compared to controls, the SE group showed an increase in psychological safety (d = -.95, p <.001). SE group-specific changes were also found for different types of positive and negative affect and for social connectedness. Heart Rate (HR) decreased, and Heart Rate Variability (HRV) increased across groups. In Study II, compared to controls, the SE group showed a reduction in DBB (d = 1.13, p <.001) and an increase in interoceptive awareness, a proposed mechanism of action. Conclusions: A brief, SE-based intervention can facilitate momentary states of perceived safety and improve social connectedness in adults with different levels of CM. Future research should explore longer-lasting positive effects of SE. 

Child maltreatment (CM) is associated with social problems, such as loneliness and isolation. One factor that might contribute to these problems is the tendency for individuals who have experienced CM to interpret neutral facial expressions as negative (i.e., negativity bias). Previous research has shown that mental representations of an attachment figure (AF) can lead to positive evaluations of neutral stimuli. We assessed whether such representations can also counteract negativity bias among individuals who experienced CM. Adults (N = 159) with and without a CM history completed a facial emotion recognition task. Prior to that, 53 participants with a CM history imagined an AF, and the rest (n = 49), as well as controls with no CM history (n = 57), imagined a neutral person. Participants in the AF group, d = 0.36, p <.001, but not the two other groups, demonstrated increased self-reported security in response to the imagination task. However, imagining an AF did not lead to stronger vagal responses to the imagination task than imagining a neutral person nor did it counteract negativity bias; compared to controls, individuals who experienced CM interpreted neutral expressions more often as contempt, βs.46–.48; ps =.016–.019, regardless of whether they imagined an AF or a neutral person. Thus, imagining an AF may be a helpful intervention to increase momentary feelings of security in individuals with a CM history. However, alternative—possibly body-oriented—interventions and their potential to reduce socially relevant alterations (e.g., negativity bias) on a behavioral level should be explored. 

Childhood Sexual Abuse (CSA) poses a significant risk to mental health, especially among adolescents. This systematic review and meta-analysis investigates the association between CSA and adolescent psychopathology. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 guidelines, we conducted an extensive search across multiple databases, including PubMed, Scopus, PsycINFO, Science Direct, Embase, and ProQuest, resulting in 27,207 observational studies. From this pool, 87 studies (n: 189,393) were included in the qualitative synthesis and 78 studies were included in meta-analysis, discussing CSA and adolescent’s psychopathology Random effect model with Cohen’s d values were used to analyze data. To assess publication bias, funnel plots, Egger’s regression test, and the fill and trim method were employed, with no significant bias found. The results indicated a positive correlation between CSA and adolescent psychopathology, for example, depression, anxiety, PTSD, suicidal ideation, nonsuicidal self-injury, anger, substance use, and sexrelated behaviors (Pooled association: 0.13–0.25, 95% CI [0.04, 0.28]). Subgroup analysis showed the strongest association in clinical samples. Furthermore, the moderator analysis suggested minimal influence of study-level variables, as well as men showing higher levels of anger and suicidal ideation. The positive correlation between CSA and psychopathological outcomes highlights the detrimental effects of CSA on adolescents’ mental health. To mitigate these effects, increased awareness, prevention efforts, and targeted interventions are essential. 

Background: Somatic symptoms, such as chronic pain, fatigue, and gastrointestinal disturbances, are commonly reported in individuals with a history of childhood maltreatment (CM), which includes various forms of abuse and neglect experienced before age 18. Although CM is strongly associated with somatic symptoms, the specific relationships between CM subtypes and these symptoms, as well as the mechanisms connecting them, remain insufficiently understood. This review examines the complex interaction between CM and somatic symptoms, which often coexist with mental disorders and significantly impact quality of life and healthcare systems. Summary: Somatic symptoms, frequently a mix of “explained” and “unexplained” conditions, are associated with personal distress and pose diagnostic challenges. CM has been linked to these symptoms through neurobiological mechanisms, such as HPA axis dysregulation and allostatic load, while theoretical models emphasize the roles of hyperawareness, cultural factors, and vulnerability in symptom development. However, existing research often fails to account for specific CM subtypes, the full range of somatic symptoms, and cultural and situational factors, leading to inconsistencies in findings. Key Messages: Bridging gaps in literature requires adopting the World Health Organization’s CM subtype definitions and ICD-11 codes (MA00-MH2Y) to encompass a broader spectrum of somatic symptoms. Employing rigorous methodologies, such as systematic reviews and meta-analyses, is essential for advancing understanding. These approaches can enhance diagnostic accuracy, support tailored interventions, and promote a biopsychosocial framework for CM research, ultimately improving patient outcomes and alleviating societal burdens. 

Childhood maltreatment (CM), defined as caregiver-perpetrated abuse or neglect during childhood or adolescence, is associated with enduring social dysfunction. Adults with a history of CM often maintain greater interpersonal distance from both friends and strangers, regardless of relational closeness. Predictive-processing models suggest that such impairments may stem from the development of overly precise negative beliefs about others, which are resistant to updating, even in the face of contradictory information. The current study investigated whether the ability to form and update social beliefs varies as a function of CM history, and whether belief updating moderates the association between CM and posttraumatic stress disorder (PTSD) symptoms following trauma exposure in adulthood. One hundred and eighteen participants completed a battery of questionnaires and a performance-based task assessing belief formation and updating about friends and strangers. Results indicated no CM-related differences in initial belief formation. However, as predicted, adults with a CM history showed impaired belief updating when interacting with strangers. Importantly, deficits in stranger-related belief updating moderated the relationship between CM severity and PTSD symptoms: those with poor updating showed a stronger association between CM and PTSD, while those with greater flexibility in belief updating reported low symptom levels regardless of maltreatment severity. These findings suggest that CM may disrupt adaptive belief updating in interpersonal contexts, contributing to later vulnerability to psychopathology. The results highlight the potential value of targeting social cognitive processes, particularly belief updating, in interventions aimed at improving social functioning and psychological resilience among individuals with a history of CM.

Background: Student engagement in traumatic stress research is recognised in academic settings, yet few studies have examined students' contributions or the structural barriers limiting their involvement.Objective: This letter aims to offer a critical reflection on the evolving role of students in global trauma research.Method: We reviewed student contributions to research innovation and examined systemic obstacles and inequities faced by students globally.Results: Our reflection identifies five key contributions of student-led initiatives: (1) Promoting inclusive and globally responsive research. (2) Enhancing the democratisation of knowledge production. (3) Advancing methodological diversity. (4) Amplifying marginalised voices within academic spaces. (5) Informing trauma research that reflects local epistemologies and lived realities. Persistent challenges include limited funding, institutional recognition, and inequitable access to research infrastructure, which disproportionately affect students in under-resourced settings.Conclusions: Greater institutional support for student leadership and collaboration, investing in student-led networks and fostering equitable research partnerships for emerging scholars may help build a more inclusive and globally responsive research agenda within the field of psychotraumatology.

Childhood Emotional Maltreatment (CEM) is a significant but under-studied risk factor for impaired mental health, with adolescents being particularly susceptible. This systematic review and meta-analysis, prospectively registered in PROSPERO as CRD42022383005, aims to synthesize the findings of studies investigating the association between CEM and adolescent psychopathology, making it the first attempt to the best of our knowledge. Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 guidelines, a comprehensive search (PubMed, Scopus, PsycINFO, Science Direct, Embase, and ProQuest) yielded 12,224 studies, from which 72 were included in the qualitative synthesis. The meta-analysis was conducted on 76 effect sizes (ranging from 0.01 to 0.57) extracted from 56 studies. The assessment of publication bias utilized funnel plots, Egger’s regression test, and the trim and fill method, if required. Additionally, a predictor analysis investigated the influence of study-level variables on the CEM-psychopathology association. Results revealed a significant positive correlation between CEM and adolescent psychopathology (Pooled association: 0.24–0.41) Furthermore, assessment of publication bias indicated no significant bias. The predictor analysis suggested minimal influence of study-level variables. The study underscores the urgent need to address CEM as a crucial risk factor for adolescent psychopathology. The significant positive correlation between CEM and psychopathological outcomes highlights the detrimental effects of CEM on adolescents. Awareness, prevention efforts, and targeted interventions are essential to mitigate these effects. Further studies with culturally diverse and larger sample sizes are required, with emphasis on methodological rigor, given that most of the identified studies showed a high risk of bias. 

Childhood maltreatment (CM) is thought to be associated with altered responses to social stimuli and interpersonal signals. However, limited evidence exists that CM is linked to larger comfortable interpersonal distance (CID) – the physical distance humans prefer towards others during social interactions. However, no previous study has investigated this association in a comprehensive sample, yielding sufficient statistical power. Moreover, preliminary findings are limited to the European region. Finally, it is unclear how CM affects CID towards different interaction partners, and whether CID is linked to social functioning and attachment. To address these outstanding issues, adults (N = 2986) from diverse cultures and socio-economic strata completed a reaction time task measuring CID towards an approaching stranger and friend. Higher CM was linked to a larger CID towards both friends and strangers. Moreover, insecure attachment and less social support were associated with larger CID. These findings demonstrate for the first time that CM affects CID across countries and cultures, highlighting the robustness of this association.

Previous studies report a preference for larger comfortable interpersonal distance (CIPD) in individuals with child maltreatment (CM) when being approached by others. Yet, research on approaching others, as opposed to being approached, as well as on potential effects of social anxiety and depression is lacking. We investigated if CM and depressive symptoms influence CIPD and if social anxiety mediates the possible association of CM and CIPD when approaching a female stranger. One hundred ten participants with CM (CM) and 58 participants without CM (non-CM) experiences performed the stop-distance paradigm and stopped first when feeling uncomfortable (D1) and again when feeling very uncomfortable (D2). CM experiences were associated with a preference for larger CIPD, independent of depressive symptoms. All CM subtypes were associated with a larger D2. The relationship between CM and CIPD was partially mediated by social anxiety. These novel findings can help to develop interventions strengthening socially relevant skills and processes in those affected by CM, targeting alterations in social anxiety and depression. 

Childhood maltreatment is a risk factor for loneliness and is linked to breast cancer. Parental bonding experienced during one’s childhood also plays a significant role in increasing or decreasing the risk of loneliness later in life. Previous research has highlighted the significance of ambivalence over emotional expression (AEE) and self-discrepancy in the psychological adaptation of breast cancer patients, particularly concerning the impact of parental care and control experienced by patients in their relationship with their parents during childhood. Nevertheless, previous studies have not examined the mediating effects of AEE and self-discrepancy on parental care and control, as well as loneliness, in breast cancer patients. This study aimed to investigate whether AEE and self-discrepancy mediate the association of childhood parental care and control with loneliness in breast cancer patients with a history of childhood maltreatment. One hundred and thirty-three breast cancer patients who were receiving chemotherapy within the first 3 months post-diagnosis were recruited from one private and three public hospitals in Tabriz, Iran, to complete questionnaires. Parental bonding, loneliness, AEE, and self-discrepancy were assessed using the Parental Bonding Instrument (PBI), University of California Los Angeles (UCLA) Loneliness Scale, Ambivalence over the Expression of Emotion Questionnaire (AEQ), and Self-Discrepancies Scale (S-DS). Mediation models were tested using structural equation modeling. Effects of parental care (β = −.17, p <.05) and control (β =.21, p <.001) on loneliness were significant. Furthermore, both AEE (β =.19, p <.05) and self-discrepancy (β =.23, p <.01) significantly predicted loneliness. The pathway between parental care and AEE was significant (β = −.21, p <.001), as was the direct effect of parental control on self-discrepancy (β =.19, p <.05). Bootstrapping results showed that AEE significantly mediated the relationship between parental care and loneliness (95% confidence interval [CI] [−0.09, −0.01]). In addition, there was a significant indirect effect from parental control to loneliness via self-discrepancy (95% CI [0.11, 0.01]). These findings suggest that AEE and self-discrepancy could potentially be utilized in preventing or addressing loneliness in breast cancer patients who have a history of childhood maltreatment. Future research could, for example, assess whether integrating psychosocial interventions focusing on these variables as part of medical care can improve the mental health status of this subgroup of breast cancer patients who have experienced childhood maltreatment.