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Treating Psychotic Symptoms using Trauma-Focused Psychological Therapies:
Opportunities and Challenges
D r R a c h e l B r a n d
T h e Vo i c e s C l i n i c
C e n t r e f o r M e n t a l H e a l t h
S w i n b u r n e U n i v e r s i t y o f
Te c h n o l o g y
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The Voices Clinic is a specialist psychology treatment and research clinic for people who hear voices or have similar experiences.
Based at Swinburne University, Melbourne Australia
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Angela was a 25 year old woman with a diagnosis of schizophrenia. She frequently heard voices (auditory hallucinations) that were frequent, critical,
threatening, and commanding.
“You’re disgusting”“You’re filth”
“Keep your mouth shut” ”I can have you killed”
She was terrified, depressed, and hopeless
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Are some voices a type of trauma memory intrusion, similar to those experienced in PTSD?
Can we use the effective psychological treatments we have for PTSD to treat some voices?
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Are some voices a type of trauma memory intrusion, similar to those experienced in PTSD?
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6 Traumatic and adverse experiences are common in people with psychotic disorders
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Varese et al., 2012 Kelleher et al., 2013Shevlin et al., 2008
There is mounting evidence that traumatic life events play a causal role in psychotic experiences.
Strength and consistency of association
Dose-response effect Temporal ordering and reversal of effect
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Several ‘families’ of posttraumatic psychological processes are implicated in the link between trauma and psychosis.
Williams et al., 2018
Posttraumatic sequelae•Dissociation•PTSD symptoms
Affective dysfunction/ dysregulation•Attachment•Depression and
anxiety•Emotion
dysregulation
Cognitive factors•Self esteem•Self concept
clarity•Social defeat•Negative schema
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Are some voices a type of trauma memory intrusion?
• Phenomenological similarities between voices and trauma memory intrusions
• Voice content has direct or thematic links to trauma for about 50% (Hardy et. al, 2005)
• Trauma memory intrusions mediate the link between trauma and voices (Peach et al., 2018)
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Key theoretical models
• Shifts in information processing during traumatic events leads to vivid, fragmented, predominantly perceptual, and decontextualised memories
• This process is more severe in people with psychosis (difficulties in spatial and temporal integration)
• Trauma memory intrusions occur without autonoeticrecollection, so are experienced as voices
Hardy, 2017; Steel et al., 2005
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The moment-to-moment association between posttraumatic stress symptoms and voices in the flow of daily life: An ecological momentary assessment study.
28 people (18-75 yrs) with frequent and persistent voices and a history of traumatic events.
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6 days of EMA
• MovisensXS app
• Training in use of app
• 10 ax per day, pseudo-random
between 10am and 8pm
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12EMA items
1.Just before the beep went off I was hearing voices (that other people cannot hear)
Thinking about the traumatic or stressful event(s) we identified as related to your voices…
2. Since the last beep, memories of the event(s) came into my head when I did not want them to.
3. Since the last beep I have tried hard to avoid thinking about or being reminded of the event (s).
4. Since the last beep I have been constantly alert, on edge, irritable, or jumpy.
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Our findings…
• EMA data collected at 1680 time points, completed at 1190 (29.17% missing)
• Trauma memory intrusions within the same hour were a significant predictor of voices. A one point increase in trauma memory intrusions increased likelihood of voices by 43%.
• Avoidance and hyperarousal within the same hour were not significant predictors.
• No significant predictors of voices when looking at the previous timepoint (60-120 minutes prior)
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Are trauma memory intrusions more relevant for some people than others?
Those with a direct voice-trauma content link had a significantly stronger relationship between trauma memory intrusions and voices.
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Trauma memory intrusions play a momentary role in some voices (perhaps particularly those that have a direct content link with
traumatic events)
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Can we use the effective psychological treatments we have for PTSD to treat some voices?
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Trauma-focused therapies
E.g. Prolonged exposure, EMDR, trauma-focused CBT. All share common components and aims: • Psychoeducation• Coping skills and emotion regulation strategies• Imaginal exposure• Cognitive restructuring/ meaning making• A focus on memory processes – creation of a
coherent trauma narrative and reorganisation of memory functions
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A meta-analysis of the secondary effects of trauma-focused therapies for PTSD on symptoms of psychosis
• There is now a growing evidence base for the use of trauma-focused therapies (PE, EMDR, TF-CBT) for treating PTSD in people with psychosis.
• But, there had not been any synthesis of the impact of these therapies on psychotic symptoms
• This provided an opportunity to get an initial idea of the potential of trauma-focused therapies as a treatment for psychotic symptoms
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Population Diagnosis of a psychotic disorder or the presence of psychotic symptoms
Intervention Trauma-focused treatments with an evidence base for PTSD (EMDR, prolonged exposure, TF-CT, TF-CBT, CPT)
Comparison Controlled or uncontrolled studies
Outcomes Primary: Positive symptoms, negative symptoms, hallucinations, delusionsSecondary: PTSD, depression, anxiety
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• Small, significant effect on aggregate positive symptoms at post treatment, but not significant at follow-up
• Small, significant effect on delusions at follow-up• No significant effect on negative symptoms or voices• Effects of PTSD only significant at follow-up and of a small magnitude
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• Some promising effects of TF-treatments on positive symptoms of psychosis (but not maintained at follow-up) and on delusions specifically.
• Studies predominantly aimed at treating PTSD, meaning that TF work was focused on index traumas for PTSD.
• Only two studies with data available for voices.
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There is a need for treatment trials that target traumatic memories that may be specifically related to psychotic symptoms
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The Recall Study
To assess the feasibility, acceptability and potential effects of trauma-focused imaginal exposure for trauma-related voices.
An initial exploration of mechanisms of change; trauma-memory intrusions, the nature of the trauma memory, and posttraumatic cognitions
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Feasibility /acceptability•Uptake•Retention•CSQ
Effectiveness•PSYRATS-AHS
Mechanisms of change•CAPS-5•TMQ•PTCI
The Recall study
A single arm proof of concept case series (n=15) of a 6-session imaginal exposure intervention.
Participants had: frequent and persistent voices, a history of traumatic events, made some links between trauma and voices, and were interested in a TF therapy.
Assessments:Baseline, post treatment and 1-month follow-up
• Frequency and distress (0-10) for voices and trauma memory intrusions rated each session
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26 Imaginal Exposure
6 weekly 90-minute sessions
Based on imaginal exposure in Foa’s PE manual.
First session included exploration of trauma-voice links.
Memories targeted were those recognised as having a link with voices.
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27Results: Feasibility/ Acceptability
• Low referral rates into the study• Low uptake from those screened (42% of those screened did not want to do the
therapy when it was explained to them)
Retention in the therapy: 15 enrolled
14 began therapy
11 completed therapy
12 completed all assessments
Did not attend first session and lost contact
Ceased therapy due to distress and symptom exacerbation
Ceased therapy due to mental health inpatient admission (not deemed related to the study)
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28 Resul ts : Sat i sfact ion and d i st ress
1 (8.6%)
3 (25%)
6 (50%)
1 (8.3%3 (25%)
8 (66.7%)
1 (8.3%)
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R e s u l t s : E f f e c t i v e n e s s
a n d m e c h a n i s m s o f
c h a n g e
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Results: Mean session-by-session scores
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• Brief imaginal exposure generally acceptable, but distress and temporary symptom exacerbation common and unacceptable for some.
• Low referral and uptake suggest feasibility issues in use of standalone, brief trauma-focused exposure intervention.
• Potentially large effects on voices, but individual response highly variable.
• Therapy did reduce PTSD symptoms and intrusiveness of trauma memory.
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Where are we now?
• Trauma memory intrusions may play a role in some people’s voices (particularly those who show direct content links)
• Trauma-focused therapies show promise in treating trauma-related psychotic symptoms
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Important questions.. and some initial thoughts
• What influences the acceptability and tolerability of trauma-focused therapies for psychotic experiences? • Who is most likely to benefit?
Direct content link between voices and trauma Comorbid intrusions Subjective sense of safetyX Persecutory understanding of voicesX Not in a position to tolerate symptom exacerbation
• Is imaginal exposure the best treatment (Imagery rescripting – Paulik et al. 2019; phase-based TF-CBTpapproach Keen et al., 2017)
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Contr ibutors
D r S a r a h B e n d a l lO r y g e n : T h e N a t i o n a l
C e n t r e o f E x c e l l e n c e i n Y o u t h M e n t a l H e a l t h
D r A m y H a r d yI n s t i t u t e o f P s y c h i a t r y ,
P s y c h o l o g y & N e u r o s c i e n c e , K i n g ’ s C o l l e g e L o n d o n
P r o f S u s a n R o s s e l lC e n t r e f o r M e n t a l H e a l t hS w i n b u r n e U n i v e r s i t y o f
T e c h n o l o g y
A / P r o f N e i l T h o m a sC e n t r e f o r M e n t a l H e a l t hS w i n b u r n e U n i v e r s i t y o f
T e c h n o l o g y
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Write hereSomething About
W R I T E S O M E T H I N G H E R E
Thank you for listening.
E m a i l : r b ra n d @ s w i n . e d u . a u@ ra c h e l m b ra n d
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