The relationship between childhood adversities and dissociation in severe mental illness: a meta-analytic review Rafiq S, Campodonico C, Varese F. The relationship between childhood adversities and dissociation in severe mental illness: a metaanalytic review Objective: Several studies have observed that dissociative experiences are frequently reported by individuals with severe mental illness (SMI), especially amongst patients that report a history of adverse/traumatic life experiences. This review examined the magnitude and consistency of the relationship between childhood adversity (sexual abuse, physical abuse, emotional abuse, neglect, bullying, natural disasters and mass violence) and dissociation across three SMI diagnostic groups: schizophrenia, bipolar disorder and personality disorders. Method: A database search (EMBASE, PubMed and PsycINFO) identified 30 eligible empirical studies, comprising of 2199 clinical participants. Effect sizes representing the relationship between exposure to childhood adversity and dissociation were examined and integrated using a random-effects meta-analysis. Results: The results indicated that exposure to childhood trauma was associated with heightened dissociation across SMIs. Positive significant associations were also found between specific childhood adversities and dissociation, with aggregated effect sizes in the small-to-moderate range. Conclusion: These findings support calls for the routine assessment of traumatic experiences in clients with SMIs presenting with dissociative symptoms and the provision of adequate therapeutic support (e.g. trauma-focused therapies) to manage and resolve these difficulties. Summations• Small-to-moderate relationship between childhood trauma and dissociation across SMIs. • Medium relationship between childhood trauma and dissociation in schizophrenia-spectrum disorders.• All forms of childhood traumatic experiences (e.g. sexual abuse, physical abuse, emotional abuse, emotional neglect, physical neglect) were found to be associated with dissociation in people diagnosed with SMI. Considerations• Only three studies were found eligible for the bipolar sample (i.e. low power); therefore, no strong conclusions can be drawn regarding the association between childhood trauma and dissociative experiences in bipolar disorder.• The relationship between childhood trauma and dissociation in SMI requires further corroboration using longitudinal designs to determine causality and directionality.• No firm conclusions can be drawn regarding which specific traumatic experience is most strongly associated with dissociation, as the studies included in the analysis were not independent (i.e. effects for sexual abuse and physical abuse estimated from the same sample of participants). 509Acta Psychiatr Scand 2018: 138: 509-525
Trauma and trauma-specific mental health difficulties (e.g., post-traumatic stress disorder) are highly prevalent in people with psychosis. However, not everyone develops post-traumatic symptoms, and some people even experience post-traumatic growth (PTG) following trauma. It is important to identify which protective factors are associated with less severe trauma symptoms and/or positive outcomes to inform the development and implementation of interventions fostering these variables. Eighty-five patients with experiences of psychosis took part in a cross-sectional study. They were administered questionnaires measuring exposure to traumatic events, symptoms of PTSD and complex PTSD and potential protective factors assumed to be associated with lower vulnerability for post-traumatic symptoms and higher post-traumatic growth (trait resilience, secure attachment, social support, adaptive coping, optimism, general self-efficacy). Multiple hierarchical regression showed that some of these protective factors, in particular optimism, were associated with lower post-traumatic symptoms, explaining 21% of the variance in complex PTSD symptoms and 16% of the variance in PTSD symptoms. However, the hypothesized protective factors, in particular resilience and adaptive coping, explained a considerably larger proportion of variance in PTG (44%). Our results suggest that whilst these variables provide only moderate protection from the vulnerability to experience post-traumatic stress, they may play an important role in allowing people to find meaning despite multiple traumas and subsequently lead more fulfilling lives. Therapies targeting the emotional and psychological consequences of trauma in people with psychosis might benefit from the integration of intervention strategies to enhance these additional psychological protective factors, which in turn may lead to positive treatment outcomes beyond the mere reduction of post-traumatic stress symptoms.
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