Emotional and non-emotional mental imagery and auditory verbal hallucinations (hearing voices): A systematic review of imagery assessment tools.

It is unknown to what extent mental imagery and auditory verbal hallucinations (AVHs) are related. Trials evaluating this issue used both emotional and non-emotional mental imagery tools, thereby complicating outcomes comparisons. Therefore, the present study aimed to systematically review the literature on mental imagery in individuals with AVHs to (1) inventory imagery assessment tools used in this population, (2) to collect information on the relation between emotional and non-emotional mental imagery in all sensory domains and AVHs and (3) to integrate the outcomes of this systematic review in a model of different mental imagery domains and related assessment tools. We conducted a systematic literature search in the PubMed Database. After full-text screening, 17 papers were included. Findings showed that a variety of assessment methods have been used to assess various aspects of mental imagery in people with AVHs, suggesting that there is a lack of agreed theoretical conceptualization of mental imagery and AVHs. In addition, the studies confirmed as was expected that non-emotional mental imagery seemed unrelated to AVHs whereas emotional mental imagery was related to AVHs. Lastly, we proposed a model of mental imagery domains and corresponding assessment methods distinguishing between emotional and non-emotional mental imagery.

Does disorganised attachment lead to auditory hallucinations via dissociation? An experimental study with an analogue sample.

OBJECTIVES: Auditory hallucinations (such as hearing voices) are common in clinical and non-clinical populations. Many people who hear voices also report early adversity and have an insecure attachment style. Current cognitive models suggest that dissociation mediates an association between disorganised attachment and auditory hallucinations, but this has not been tested experimentally. DESIGN: We recruited a non-clinical analogue sample highly predisposed to auditory hallucinations and utilised an experimental design to examine the impact of disorganised attachment imagery on hallucinatory experiences, and whether dissociation mediates an expected association. METHODS: Participants completed self-report measures of state auditory hallucinations and dissociation before and after random allocation to secure or disorganised attachment conditions. RESULTS: Attachment imagery did not affect auditory hallucinations. Both secure and disorganised attachment conditions increased state dissociation. Secure attachment imagery reduced paranoia, but state dissociation did not mediate this effect. An exploratory analysis found that trait dissociation fully accounted for the association between trait-disorganised attachment and hallucinatory experience while controlling for paranoia. CONCLUSIONS: Secure attachment imagery reduces paranoia but not auditory hallucinations and the impact on paranoia is not mediated by dissociation. Secure attachment imagery may be useful in reducing fears and distress associated with voices, rather than the frequency or severity of hallucinations. Disorganised attachment may increase hallucinatory experiences for people vulnerable to dissociation. Trait dissociation should be assessed in clinical settings and addressed where indicated as a means of targeting vulnerability to distressing voices.

Do emotion regulation strategies mediate the attachment-paranoia association? An experimental study of repeated attachment imagery priming and stress buffering.

OBJECTIVES: Paranoia describes unfounded interpersonal threat beliefs. Secure attachment imagery attenuates paranoia, but limited research examines mechanisms of change and no studies examine how secure imagery may be implemented most effectively in clinical practice. In this study, we tested: (a) the causal impact of secure, anxious, and avoidant attachment imagery on paranoia and anxiety, (b) whether emotion regulation strategies mediate these relationships, and (c) whether secure imagery buffers against social stress. DESIGN: We utilized a longitudinal, experimental design. METHOD: A general population sample with high non-clinical paranoia (N = 265) completed measures of paranoia, anxiety, and emotion regulation strategies. Participants were randomly allocated to secure, anxious, or avoidant conditions and repeated an imagery prime for four days prior to a social stress task. RESULTS: Relative to anxious and avoidant imagery, secure imagery decreased state paranoia and anxiety. These associations were not mediated by state emotion regulation strategies, and secure imagery did not buffer against stress. Exploratory analyses on trait variables revealed that: (a) hyperactivating strategies mediated the association between attachment anxiety and paranoia, and (b) suppression mediated the association between attachment avoidance and paranoia. CONCLUSIONS: Secure attachment imagery reduces state paranoia and anxiety and could be incorporated into psychotherapies to attenuate clinical paranoia. Measurement of state emotion regulation was problematic. Attachment imagery does not buffer stress; further research is required to test whether secure imagery facilitates recovery from stress. Attachment style is likely to account for trait paranoia via attachment-congruent emotion regulation strategies. Research is now needed to determine if these strategies can be targeted to alleviate paranoia in clinical populations.

Impact of attachment imagery on paranoia and mood: evidence from two single case studies.

BACKGROUND: Cognitive behavioural therapy (CBT) for psychosis currently yields modest outcomes and must be improved. Attachment imagery may be an effective means of reducing severity of paranoid beliefs and associated affect. Experimental studies have demonstrated these effects in non-clinical groups. The impact in clinical populations remains untested. AIMS: This study assessed the impact of a brief attachment imagery task on paranoia and mood, in two people with a diagnosis of schizophrenia. METHOD: Two single case studies are presented. Both participants were working age adults with persecutory delusions. The study utilised an A-B-A design. Participants were recruited for a 6-week period, with a 2- and 3-week baseline respectively, 1-week intervention phase, and follow-up phase matched to duration of baseline. Trait paranoia and attachment were measured at the start of the baseline. State paranoia and affect were measured daily over the 6-week period. RESULTS: For both participants, the baseline phase was characterised by high and variable levels of paranoia, which reduced during the intervention phase, with a return to baseline scores at follow-up. We found a similar pattern for negative affect, and the reverse pattern for positive affect. CONCLUSIONS: Attachment imagery may function as an effective emotion regulation strategy for people with psychosis. Continued use is likely to be needed to maintain gains. This brief task could prove valuable to people needing skills to manage paranoia and mood, and give clinicians confidence that people can manage short-term distress in CBT for psychosis, for example when addressing past trauma.

Imagery rescripting in non-clinical paranoia: a pilot study of the impact on key cognitive and affective processes.

BACKGROUND: Paranoia is often accompanied by distressing intrusions associated with traumatic memories, yet one of the best-evidenced interventions, imagery rescripting (IR), is not routinely offered. This is likely to be due to poor understanding of the effects of IR on postulated mechanisms of change as well as the absence of a robust evidence base. AIMS: This study aimed to establish proof of principle that IR impacts key cognitive-affective processes associated with distressing intrusions - memory characteristics and self-representations - and level of paranoia. METHOD: We used a within-subject repeated measures design to examine the effect of single-session IR on memory characteristics (level of intrusions, vividness, distress, encapsulated belief strength, emotion intensity and frequency), self-representation variables, affect and paranoia. Fifteen participants were seen once before and once after the IR session, to gather baseline and follow-up data. RESULTS: As predicted, participants reported reductions in memory characteristics, improved self-esteem and positive affect, and reduced negative affect and paranoia, with large effect sizes. These effects were maintained at follow-up. CONCLUSIONS: While a within-subject design is useful for initial exploration of novel interventions, controlled studies are needed to determine causality. This is the first study to examine mechanisms of IR in paranoia. A controlled trial is now warranted.

Protocol for a multicentre study to assess feasibility, acceptability, effectiveness and direct costs of TRIumPH (Treatment and Recovery In PsycHosis): integrated care pathway for psychosis.

INTRODUCTION: Duration of untreated psychosis (time between the onset of symptoms and start of treatment) is considered the strongest predictor of symptom severity and outcome. Integrated care pathways that prescribe timeframes around access and interventions can potentially improve quality of care. METHODS AND ANALYSIS: A multicentre mixed methods study to assess feasibility, acceptability, effectiveness and analysis of direct costs of an integrated care pathway for psychosis. A pragmatic, non-randomised, controlled trial design is used to compare the impact of Treatment and Recovery In PsycHosis (TRIumPH; Intervention) by comparison between NHS organisations that adopt TRIumPH and those that continue with care as usual (Control). Quantitative and qualitative methods will be used. We will use routinely collected quantitative data and study-specific questionnaires and focus groups to compare service user outcomes, satisfaction and adherence to intervention between sites that adopt TRIumPH versus sites that continue with usual care pathways. SETTING: 4 UK Mental health organisations. Two will implement TRIumPH whereas two will continue care as usual. PARTICIPANTS: Staff, carers, individuals accepted to early intervention in psychosis teams in participating organisations for the study period. INTERVENTION: TRIumPH-Integrated Care Pathway for psychosis that has a holistic approach and prescribes time frames against interventions; developed using intelligence from data; co-produced with patients, carers, clinicians and other stakeholders. OUTCOMES: Feasibility will be assessed through adherence to the process measures. Satisfaction and acceptability will be assessed using questionnaires and focus groups. Effectiveness will be assessed through data collection and evaluation of patient outcomes, including clinical, functional and recovery outcomes, physical health, acute care use. Outcome measures will be assessed at baseline, 12 and 24 months to measure whether there is an effect and if so, whether this is sustained over time. Outcomes measures at the adopter sites will be compared to their own baseline and against comparator sites. ETHICS AND DISSEMINATION: Ethics approval was obtained from East of Scotland Research Ethics Service (REC Ref no: LR/15/ES/0091). The results will be disseminated through publications, conference presentations, reports to the organisation. STUDY REGISTRATION: UK Clinical Research Network Portfolio: 19187.

The role of mental imagery in non-clinical paranoia.

BACKGROUND & OBJECTIVES: Cognitive models of paranoia incorporate many of the processes implicated in the maintenance of anxiety disorders. Despite this, the role of mental imagery in paranoia remains under-researched. The current study examined the impact of a self-imagery manipulation in people with high non-clinical paranoia. METHODS: We used a mixed design with one between-subjects variable (type of self-imagery) and one within-subjects variable (time--pre and post imagery manipulation). Thirty participants with high trait paranoia were allocated alternately to a positive or negative self-imagery condition. Scripts were used to elicit positive and negative self-imagery. All participants completed self-report state measures of paranoia, mood, self-esteem and self-compassion. RESULTS: Group by time interaction effects were found for each of the dependent variables. Positive imagery led to less state paranoia, anxiety and negative affect, and more positive affect, self-esteem and self-compassion, compared with the negative imagery group. LIMITATIONS: This was a non-blind study, limited by allocation method and a brief time-frame which did not allow us to assess longevity of effects. We recruited a relatively small and predominantly female sample of people with high non-clinical paranoia. The study did not include a neutral control condition, a low paranoia comparison group, or a manipulation check following the imagery task. CONCLUSIONS: Self-imagery manipulations may affect paranoia, mood and self-beliefs. If the findings are replicated with clinical groups, and maintained over a longer period, this would suggest that imagery-based interventions targeting persecutory delusions might be usefully examined.

Impact of mindfulness on cognition and affect in voice hearing: evidence from two case studies.

BACKGROUND: There is a small body of research indicating that mindfulness training can be beneficial for people with distressing psychosis. What is not yet clear is whether mindfulness effects change in affect and cognition associated with voices specifically. This study examined the hypothesis that mindfulness training alone would lead to change in distress and cognition (belief conviction) in people with distressing voices. METHOD: Two case studies are presented. Participants experienced long-standing distressing voices. Belief conviction and distress were measured twice weekly through baseline and mindfulness intervention. Mindfulness in relation to voices was measured at the start of baseline and end of intervention. RESULTS: Following a relatively stable baseline phase, after 2-3 weeks of mindfulness practice, belief conviction and distress fell for both participants. Both participants' mindfulness scores were higher post treatment. CONCLUSION: Findings show that mindfulness training has an impact on cognition and affect specifically associated with voices, and thereby beneficially alters relationship with voices.