Trauma therapies for psychosis: A state-of-the-art review

The effect of trauma-focused therapy on voice-hearing: An experience sampling study

Trauma and post-traumatic stress are involved in the aetiology and maintenance of voice-hearing. It has been proposed that trauma-focused therapy (TFT) might affect voice-hearing, but previous studies are limited and remain undecided.

OBJECTIVES

We aimed to investigate the effect of TFT on voice-hearing in people with PTSD and psychosis using experience sampling method (ESM). A secondary aim was to explore how changes in voice-hearing are related to changes in PTSD.

DESIGN

This is an adjunct longitudinal ESM study of a sub-group of participants (N = 39) from a randomised controlled trial that compared TFT to a waiting-list control group.

METHODS

Voice-hearing participants filled in 10 daily voice-hearing-related questionnaires for six consecutive days at baseline and post-treatment at pseudo-random times during the day. PTSD symptom severity was assessed at baseline and post-treatment. Multilevel linear regression was used to test the effect of TFT on voice-hearing and to analyse the relationship between changes in voice-hearing and changes in PTSD.

RESULTS

The intention-to-treat analysis showed a significant interaction effect between time and treatment condition (p < .00001) with a small effect size (dppc2 = -0.27), indicating a larger decrease in voice-hearing in the TFT group than in the waiting-list control group. Also, a significant association was observed between changes in PTSD symptoms and changes in voice-hearing (p < .00001).

CONCLUSIONS

Our findings tentatively suggest that, even when voices are not targeted directly, TFT for PTSD can alleviate distressing voices.

Trauma and social pathways to psychosis: Examining the role of attachment, social rank and dissociation in a clinical sample

OBJECTIVES

The trauma and social pathways model of psychosis proposes interactions between trauma, attachment, social rank and dissociation in pathways to psychosis, though this model has yet to be empirically investigated. The primary aim of this study was to examine the overall predictive value of the trauma and social pathways model using regression analysis. A secondary aim was to delineate hypothesized pathways between trauma and positive symptoms of psychosis using serial mediation analysis.

METHOD

This was a cross-sectional study of people attending mental health services for a psychosis-related diagnosis (N = 71). Measures of trauma, positive symptoms of psychosis, attachment, social comparison and dissociation were completed.

RESULTS

A model of recurrent trauma, insecure attachment, social rank and dissociation predicted 23.2% of the variance in positive symptoms of psychosis. Recurrent trauma, attachment and dissociation contributed significantly to the model, while social rank did not. Further, serial mediation analysis indicated that the sequence of disorganized attachment and dissociation fully mediated the relationship between recurrent trauma and positive symptoms.

CONCLUSIONS

Results provide preliminary support for the trauma and social pathways model of psychosis, specifically as it relates to recurrent trauma, insecure attachment and dissociation. Results did not support the social rank component of this model, however. These findings provide clear targets for the development of next-wave psychological interventions that focus on trauma-related variables in psychosis. Future studies should replicate these findings with a larger clinical sample, and consider a measure of shame to further elucidate social processes in pathways to psychosis.

Hallucinations across sensory domains in people with post-traumatic stress disorder and psychosis

Auditory hallucinations are common in people with histories of adversity, possibly indicating a causal relationship. However, hallucinations occur in multiple sensory modalities and the relationship between trauma and hallucinations in other sensory domains is less explored. We examined the occurrence of hallucinatory experiences in different sensory modalities in people with psychosis who also met criteria for Post-Traumatic Stress Disorder (n = 67). Particular attention was paid to the number of modalities reported and whether the experiences were linked to the person's adversity. This linkage was explored in two ways. First, it was predicted that those people reporting more trauma experiences and symptoms of PTSD would report a greater number of hallucination modalities. Second, we examined if there was content or thematic linkage between the trauma and the hallucinatory experiences. There were high levels of reported auditory (89.6 %), visual (58.2 %) and tactile (46.3 %) hallucinations. Hallucinations in two or more modalities were the norm (71.6 % of the participants). The number of hallucination modalities was moderately associated with a greater number of past traumas and PTSD symptoms. There was a high degree of content and thematic linkage between the trauma and the hallucinations. The linkage between trauma and auditory hallucinations extends to other sensory domains.

Childhood trauma and treatment resistance in first-episode psychosis: Investigating the role of premorbid adjustment and duration of untreated psychosis

BACKGROUND

Early identification of treatment non-response in first-episode psychosis (FEP) is essential to outcome. Despite indications that exposure to childhood trauma (CT) can have adverse effects on illness severity, its impact on treatment non-response and the interplay with other pre-treatment characteristics is sparsely investigated. We use a lack of clinical recovery as an early indicator of treatment resistance to investigate the relationship between CT and treatment resistance status at one-year follow-up and the potential mediation of this effect by other pre-treatment characteristics.

METHODS

This prospective one-year follow-up study involved 141 participants recruited in their first year of treatment for a schizophrenia-spectrum disorder. We investigated clinical status, childhood trauma (CT), premorbid adjustment (PA), and duration of untreated psychosis (DUP) at baseline and clinical status at one-year follow-up. Ordinal regression analyses were conducted to investigate how PA and DUP affected the relationship between CT and one-year outcome in FEP.

RESULTS

45 % of the FEP sample reported moderate to severe CT, with significantly higher levels of CT in the early treatment resistant group compared to participants with full or partial early recovery. Ordinal regression analysis showed that CT was a significant predictor of being in a more severe outcome group (OR = 4.59). There was a partial mediation effect of PA and a full mediation effect of DUP on the effect of CT on outcome group membership.

DISCUSSION

Our findings indicate that reducing treatment delays may mitigate the adverse effects of CT on clinical outcomes and support the inclusion of broad trauma assessment in FEP services.

The association of adverse childhood experiences with long-term outcomes of psychosis: a 21-year prospective cohort study after a first episode of psychosis

BACKGROUND

Evidence suggests a possible relationship between exposure to childhood adversity (CA) and functional impairment in psychosis. However, the impact of CA on long-term outcomes of psychotic disorders remains poorly understood.

METHODS

Two hundred and forty-three patients were assessed at their first episode of psychosis for CA and re-assessed after a mean of 21 years of follow-up for several outcome domains, including symptoms, functioning, quality of life, cognitive performance, neurological dysfunction, and comorbidity. The unique predictive ability of CA exposure for outcomes was examined using linear regression analysis controlling for relevant confounders, including socioeconomic status, family risk of schizophrenia, and obstetric complications.

RESULTS

There were 54% of the patients with a documented history of CA at mild or higher levels. CA experiences were more prevalent and severe in schizophrenia than in other psychotic disorders (p < 0.001). Large to very large effect sizes were observed for CA predicting most role functioning variables and negative symptoms (ΔR2 between 0.105 and 0.181). Moderate effect sizes were observed for positive symptoms, personal functioning, impaired social cognition, impaired immediate verbal learning, poor global cognition, internalized stigma, poor personal recovery, and drug abuse severity (ΔR2 between 0.040 and 0.066). A dose-response relationship was observed between levels of CA and severity of outcome domains.

CONCLUSION

Our results suggest a strong and widespread link between early adversity exposure and outcomes of psychotic disorders. Awareness of the serious long-term consequences of CA should encourage better identification of those at risk and the development of effective interventions.

How Does Individual Psychotherapy Promote Recovery for Persons with Psychosis? A Systematic Review of Qualitative Studies to Understand the Patient's Experience

Psychotherapy for individuals with psychosis is an effective treatment that promotes recovery in various ways. While there is strong quantitative evidence across modalities, less is known from the patient's perspective. There are many varied forms of psychotherapy, and gaining the patient's perspective can improve understanding of salient elements of psychotherapy and increase engagement, ultimately improving recovery rates. The purpose of this review is to identify and integrate data from published studies of patient perspectives of psychotherapy for psychosis to understand essential elements across approaches, differences between approaches, and how psychotherapy impacts recovery. We aimed to understand further: what are the perceptions about individual psychotherapy from the perspective of individuals with psychosis? The current study was a systematic review using PRISMA guidelines of studies that included qualitative interviews with persons with experiences of psychosis who participated in psychotherapy. All three authors participated in the literature search using Pubmed, APA PsycInfo, and Psychiatry Online. We identified N = 33 studies. Studies included cognitive therapies, acceptance and mindfulness approaches, trauma therapies, metacognitive therapy, and music therapy. All studies reported participants' perceived benefit with the therapeutic relationship as especially salient. Participants described diverse aspects of objective (e.g., symptoms, functioning) and subjective (e.g., self-experience or quality of life) recovery improvements, with perceived mechanisms of change, and with music therapy having some unique benefits. Participants also reported challenges and suggestions for improvement. Study findings highlight the salient aspects of psychotherapy identified by patients that may help therapists to individualize and improve approaches to psychotherapy when working with individuals experiencing psychosis. Overall, findings support the potential for integrative psychotherapy approaches for maximal treatment personalization.