Sociodemographic characteristics associated with parenthood amongst patients with a psychotic diagnosis: a cross-sectional study using patient clinical records.

PURPOSE: Estimates of parenthood in individuals with psychosis range from 27 to 63%. This number has likely increased due to the introduction of newer anti-psychotics and shorter hospital stays. The problems of psychosis can affect patients' capacity to offer the consistent, responsive care required for healthy child development. The following research questions were assessed: (1) what proportion of these patients have their children correctly recorded in their clinical notes, (2) what proportion of patients in secondary care with a psychotic diagnosis have children, and (3) what sociodemographic characteristics are associated with parenthood in this population. METHODS: This study used CRIS (Clinical Record Interactive Search) to search for patients with a diagnosis of non-affective or affective psychosis (F20-29, F31.2 or F31.5) within a UK NHS Trust. A binomial regression model was fitted to identify the variables associated with parenthood. RESULTS: Fewer than half of the parents in the sample had their children recorded in the correct field in their clinical notes. Of 5173 patients with psychosis, 2006 (38.8%) were parents. Characteristics associated with parenthood included being female, older age, higher socioeconomic status, renting or owning, having ever been married, being unemployed, not being White (British) and not having a diagnosis of schizophrenia. CONCLUSION: Over one-third of patients with psychosis were parents, and the study indicates that not all NHS Trusts are recording dependants accurately. Many variables were strongly associated with parenthood and these findings may help target interventions for this population.

Parenting and psychosis: An experience sampling methodology study investigating the inter-relationship between stress from parenting and positive psychotic symptoms.

OBJECTIVES: There is a strong association between stress and psychotic symptoms, and this study examined the bidirectional nature of this relationship in parents with psychosis, with negative affect as a mediator and a range of other psychosocial factors included as covariates. It also examined whether stress from parenting had a larger impact on psychosis than non-parenting stress. DESIGN: The study used a within-participants repeated measures design, using experience sampling methodology (ESM). ESM is a self-report surveying technique completed over an intensive longitudinal period. Participants completed six surveys a day, for 10 days. METHODS: Thirty-five participants with psychosis who were a parent to a child between the ages of 2 and 16 took part. Study phones alerted participants to complete surveys by beeping at semi-random intervals over 10 days. Multi-level modelling was used with surveys at Level-1 and participants at Level-2. Predictor variables were time-lagged in order to infer directionality. RESULTS: Parenting stress was found to predict psychotic symptoms, and this relationship was mediated by negative affect. The reverse direction was also confirmed. Few of the additional psychosocial factors were found to have a significant impact on the models' estimations. Parenting stress was not found to have a larger impact on psychosis than other sources of stress. CONCLUSIONS: This study provides further evidence of the bidirectional relationship between stress and psychosis in the context of parenting. Further research should explore if parenting stress plays a unique role in predicting psychotic symptoms by comparing parents and non-parents with psychosis.

Group acceptance and commitment therapy for patients and caregivers in psychosis services: Feasibility of training and a preliminary randomized controlled evaluation.

OBJECTIVE: Psychological interventions reduce the impact of psychosis, but widescale implementation is problematic. We tested the feasibility of group acceptance and commitment therapy for Psychosis (G-ACTp), delivered by frontline staff, and co-facilitated by service-user experts-by-experience (SU-EbyE), for service-users and informal caregivers (ISRCTN: 68540929). We estimated recruitment/retention rates and outcome variability for future evaluation. METHODS: Staff and SU-EbyE facilitators completed 1-day workshops, then delivered closely supervised G-ACTp, comprising four sessions (weeks 1-4) and two boosters (10 and 12 weeks). Participants recruited from adult community psychosis services were randomized to receive G-ACTp immediately or after 12 weeks, completing outcome assessments at 0, 4, and 12 weeks. Service-use/month was calculated for 1-year pre-randomization, weeks 0-12, and 5-year uncontrolled follow-up. RESULTS: Of 41 facilitators trained (29 staff, 12 SU-EbyE), 29 (71%; 17 staff, 12 SU-EbyE) delivered 18 G-ACTp courses. Participant refusal rates were low (9% of service-users [10/112]; 5% of caregivers [4/79]); 60% of those invited to participate attended ≥1 G-ACTp session (64% of service-users [39/61]; 56% of caregivers [35/63]). Randomization of facilitators and participants proved problematic and participant follow-up was incomplete (78% [66/85]; 82% of service-users [36/44]; 73% of caregivers [30/41]). Effect sizes ranged from very small to large mostly favouring treatment. Service-use reductions require cautious interpretation, as very few participants incurred costs. CONCLUSIONS: Implementation appears feasible for service-users; for caregivers, retention needs improving. Outcome variability indicated n = 100-300/arm followed up (α = 0.05, 90% power). Methodological limitations' mean replication is needed: identified sources of potential bias may be reduced in a cluster randomized design with sessional outcome completion. PRACTITIONER POINTS: Group acceptance and commitment therapy can be successfully adapted for people with psychosis and their caregivers. Implementation (training and delivery) is possible in routine community mental health care settings. Clinical and economic outcomes are promising, but replication is needed. Recommendations are made for future studies.

Are We Speaking the Same Language? Finding Theoretical Coherence and Precision in "Mindfulness-Based Mechanisms" in Chronic Pain.

OBJECTIVE: Over the past 50 years, the field of chronic pain has witnessed an evolution of psychological approaches with some notable success. Some of this evolution has included "mindfulness-based interventions" (MBIs), now regarded as having encouraging partial support for their effectiveness. However, several theoretical challenges remain that may inhibit the progress of MBIs. These challenges include a lack of clarity surrounding the mindfulness construct itself, the proliferation of purported underlying mechanisms arising from different theories, and limited evidence for the mechanisms through which MBIs work. The current conceptual review provides a critique of existing theoretical models of mindfulness that have been applied to understanding and treating chronic pain. DESIGN: A conceptual narrative review was conducted. SETTING: Treatment programs for people with chronic pain. PATIENTS: Individuals with any type of chronic pain. INTERVENTIONS: MBIs for chronic pain. OUTCOME MEASURES: Mindfulness-based mechanisms explored in relation to several domains of functioning. RESULTS AND CONCLUSIONS: Based on this assessment, a summary of available evidence for a particular contextual behavioral theory of "mindfulness"-psychological flexibility-is outlined. Findings show the need for further integration of existing mindfulness constructs to better guide development and evaluation of mindfulness-based treatment methods in the future.

Acceptance and commitment therapy for psychosis: Current status, lingering questions and future directions.

PURPOSE: Acceptance and Commitment Therapy for psychosis (ACTp) is a contextual behavioural intervention that promotes psychological flexibility by fostering active acceptance, cognitive defusion, values construction and committed action to enhance well-being and recovery. Multiple studies have shown that ACTp is acceptable and efficacious, but questions remain as to its distinction from similar approaches and the conditions under which it would be implemented most effectively. METHODS: We present the current evidence for processes and outcomes of ACTp and summarise the qualitative findings of experiences of service users in ACT programmes. We compare ACTp with other cognitive behavioural therapies and mindfulness-informed interventions for psychosis. RESULTS: Acceptance and commitment therapy for psychosis is promising as a pragmatic, process-driven intervention model. Further efforts are needed to investigate psychological flexibility in the context of psychosis with observational, experimental and intervention studies that will inform model scope and treatment refinement. Additionally, implementation research is the necessary next step, including how support persons can be trained in ACTp. Lower intensity and technology-assisted approaches have the potential to reduce barriers to accessing ACTp and extend impact. CONCLUSIONS: Over the last 20 years, ACTp has demonstrated meaningful effects in individual and group formats in a range of settings, targeting outcomes such as rehospitalisation, depression, psychotic symptom distress and impact. Future work should focus on how best to integrate ACTp with other current evidence-based interventions for psychosis.

A family perspective on parental psychosis: An interpretative phenomenological analysis study.

OBJECTIVES: While one third of people with a psychotic disorder are a parent, there has been little research to date examining the consequences of this from a whole family perspective. This study investigates families where a parent has experienced an episode of psychosis and compares and contrasts the family members' perspectives. DESIGN: This study was rooted in phenomenology and data were derived from in-depth semi-structured interviews. METHODS: Parents with a psychotic disorder who had a child aged between 3 and 11 in a UK NHS Trust were invited to take part in the study. Semi-structured interviews were conducted with these parents, with their child (if they were between the ages of 8 and 11), and with their partner or another close family member. Data were analysed using multiperspectival interpretive phenomenological analysis (m-IPA). RESULTS: Thirteen participants took part comprising of five parents, four children, three partners and one grandmother. Four themes were developed using m-IPA: (1) Parental psychosis impacts the whole family, (2) Psychosis and my role as a parent, (3) Secrecy and concealment surrounding parental psychosis, and (4) Pressures and vulnerabilities within the family system. CONCLUSION: Psychosis had a negative impact on all family members and secrecy existed between family members. The children in particular only had partial information about their parent's mental illness, which left them worried and confused. More work is needed to support these families to explain psychosis to the children.

An emotional regulation approach to psychosis recovery: The Living Through Psychosis group programme.

BACKGROUND AND OBJECTIVES: Research indicates the value of targeting emotional regulation (ER) skills in psychological interventions for psychosis. These skills can be delivered in a group format, thereby increasing access to therapy. This pilot study examined the acceptability and clinical effects of teaching ER skills in The Living Through Psychosis (LTP) group programme. METHODS: Patients with a psychotic illness were offered the LTP programme, comprising eight sessions over four weeks. Measures were completed by 55 participants. Acceptability was assessed by attendance rates and group cohesion. Measures of intervention targets, recovery and clinical outcomes were completed at baseline, pre-group, post-group, and one-month follow-up. RESULTS: High group attendance and cohesion support the acceptability of the group. Participants reported less difficulty with ER (Coeff. = -8.29, 95% CI: -13.40 to -3.18, within participant uncontrolled effect size (ES) d = 0.29), increased mindful relating to distressing symptoms (Coeff. = 11.20, 95% CI: 7.02 to 15.38, d = 0.65), and improvements in recovery dimensions (Coeff. = 10.07, 95% CI: 5.6 to 14.54, d = 0.42) from pre-to post-intervention, and maintained at one-month follow-up. Participants' hallucinations and delusions reduced from pre-intervention to follow-up (t(18) = 4.64, p < 0.001; t(18) = 5.34, p < 0.001). There was no change in fear of relapse. LIMITATIONS: The uncontrolled, pre-post design precluded blinded assessments, and may have inflated effect sizes. Other factors may have contributed to the improvements. CONCLUSIONS: The LTP programme was acceptable to people with psychosis. The preliminary findings indicate the potential utility of teaching ER and mindfulness skills in a brief group programme. Findings require replication in a randomized controlled trial.

A Scoping Review of Interventions Designed to Support Parents With Mental Illness That Would Be Appropriate for Parents With Psychosis.

The experience of psychosis can present additional difficulties for parents, over and above the normal challenges of parenting. Although there is evidence about parenting interventions specifically targeted at parents with affective disorders, anxiety, and borderline personality disorder, there is currently limited evidence for parents with psychotic disorders. It is not yet known what, if any, interventions exist for this population, or what kinds of evaluations have been conducted. To address this, we conducted a scoping review to determine (1) what parenting interventions have been developed for parents with psychosis (either specifically for, or accessible by, this client group), (2) what components these interventions contain, and (3) what kinds of evaluations have been conducted. The eligibility criteria were broad; we included any report of an intervention for parents with a mental health diagnosis, in which parents with psychosis were eligible to take part, that had been published within the last 20 years. Two reviewers screened reports and extracted the data from the included reports. Thirty-eight studies of 34 interventions were included. The findings show that most interventions have been designed either for parents with any mental illness or parents with severe mental illness, and only two interventions were trialed with a group of parents with psychosis. After noting clusters of intervention components, five groups were formed focused on: (1) talking about parental mental illness, (2) improving parenting skills, (3) long-term tailored support for the whole family, (4) groups for parents with mental illness, and (5) family therapy. Twenty-three quantitative evaluations and 13 qualitative evaluations had been conducted but only eight interventions have or are being evaluated using a randomized controlled trial (RCT). More RCTs of these interventions are needed, in addition to further analysis of the components that are the most effective in changing outcomes for both the parent and their children, in order to support parents with psychosis and their families.

Superior temporal lobe dysfunction and frontotemporal dysconnectivity in subjects at risk of psychosis and in first-episode psychosis.

BACKGROUND: Superior temporal lobe dysfunction is a robust finding in functional neuroimaging studies of schizophrenia and is thought to be related to a disruption of fronto-temporal functional connectivity. However, the stage of the disorder at which these functional alterations occur is unclear. We addressed this issue by using functional MRI (fMRI) to study subjects in the prodromal and first episode phases of schizophrenia. METHODS: Subjects with an at risk mental state (ARMS) for psychosis, a first psychotic episode (FEP), and controls were studied using fMRI while performing a working memory task. Activation in the superior temporal gyrus (STG) was assessed using statistical parametric mapping, and its relationship to frontal activation was examined using dynamic causal modeling. RESULTS: The STG was differentially engaged across the three groups. There was deactivation of this region during the task in controls, whereas subjects with FEP showed activation and the response in subjects with ARMS was intermediately relative to the two other groups. There were corresponding differences in the effective connectivity between the STG and the middle frontal gyrus across the three groups, with a negative coupling between these areas in controls, a positive coupling in the FEP group, and an intermediate value in the ARMS group. CONCLUSIONS: A failure to deactivate the superior temporal lobe during tasks that engage prefrontal cortex is evident at the onset of schizophrenia and may reflect a disruption of fronto-temporal connectivity. Qualitatively similar alterations are evident in people with prodromal symptoms of the disorder.

Neural correlates of executive function and working memory in the 'at-risk mental state'.

BACKGROUND: People with prodromal symptoms have a very high risk of developing psychosis. AIMS: To use functional magnetic resonance imaging to examine the neurocognitive basis of this vulnerability. METHOD: Cross-sectional comparison of regional activation in individuals with an'at-risk mental state' (at-risk group: n=17), patients with first-episode schizophreniform psychosis (psychosis group: n=10) and healthy volunteers (controls: n=15) during an overt verbal fluency task and an N-back working memory task. RESULTS: A similar pattern of between-group differences in activation was evident across both tasks. Activation in the at-risk group was intermediate relative to that in controls and the psychosis group in the inferior frontal and anterior cingulate cortex during the verbal fluency task and in the inferior frontal, dorsolateral prefrontal and parietal cortex during the N-back task. CONCLUSIONS: The at-risk mental state is associated with abnormalities of regional brain function that are qualitatively similar to, but less severe than, those in patients who have recently presented with psychosis.

Insight in individuals with an At Risk Mental State.

PURPOSE: On average, people with an At Risk Mental State (ARMS) for psychosis are more willing to seek and accept clinical help than patients with psychotic disorders, suggesting that insight in this group is relatively less impaired. We compared the level and quality of insight in the ARMS and in first episode psychosis. MATERIALS AND METHODS: Insight about illness was assessed in subjects with an ARMS and in patients with first episode psychosis (FEP) who were and were not help-seeking, using the Schedule for Assessment of Insight (SAI-E). RESULTS: Insight was impaired in ARMS subjects, but there was considerable variability in the insight displayed between subjects. Compared to FEP subjects, ARMS subjects showed greater insight, particularly with respect to Symptom Relabelling. ARMS subjects were more likely to interpret anomalous experiences as symptoms of illness, and to perceive themselves as needing treatment. CONCLUSIONS: Insight in people at high risk for psychosis is impaired, despite the fact that they are help-seeking. Insight varies between subjects, highlighting the need to comprehensively assess all aspects of insight in those with an ARMS. ARMS subjects are impaired in their ability to appraise anomalous experiences as symptoms of illness, but much less impaired than FEP subjects. This is consistent with cognitive models that propose that the way symptoms are appraised determines whether the individual develops a psychotic illness.

The feasibility and acceptability of a brief Acceptance and Commitment Therapy (ACT) group intervention for people with psychosis: The 'ACT for life' study.

BACKGROUND AND OBJECTIVES: Acceptance and Commitment Therapy (ACT) is a contextual cognitive-behavioural approach with a developing evidence base for clinical and cost-effectiveness as an individually-delivered intervention to promote recovery from psychosis. ACT also lends itself to brief group delivery, potentially increasing access to therapy without inflating costs. This study examined, for the first time, the feasibility and acceptability of ACT groups for people with psychosis (G-ACTp). METHODS: Participants were recruited from community psychosis teams. Ratings of user satisfaction, and pre-post change in self-rated functioning (primary outcome), mood (secondary outcome) and ACT processes were all completed with an independent assessor. Of 89 people recruited, 83 completed pre measures, 69 started the four-week G-ACTp intervention, and 65 completed post measures. RESULTS: Independently assessed acceptability and satisfaction were high. Functioning (Coeff. = -2.4, z = -2.9, p = 0.004; 95% CI: -4.0 to -0.8; within subject effect size (ES) d = 0.4) and mood (Coeff. = -2.3, z = -3.5, p = 0.001; 95% CI: -3.5 to -1.0; d = 0.4) improved from baseline to follow-up. Commensurate changes in targeted ACT processes were consistent with the underlying model. LIMITATIONS: The uncontrolled, pre-post design precluded blinded assessments, and may have inflated effect sizes. Participants may have improved as a result of other factors, and findings require replication in a randomized controlled trial (RCT). CONCLUSIONS: This preliminary study showed that brief group ACT interventions for people with psychosis are feasible and acceptable. Uncontrolled, pre-post assessments suggest small clinical improvements, and changes in psychological processes consistent with an ACT model. Replication in an RCT is required, before implementation can be recommended.

What causes the onset of psychosis?

It has become increasingly clear that the simple neurodevelopmental model fails to explain many aspects of schizophrenia including the timing of the onset, and the nature of the abnormal perceptions. Furthermore, we do not know why some members of the general population have anomalous experiences but remain well, while others enter the prodrome of psychosis, and a minority progress to frank schizophrenia. We suggest that genes or developmental damage result in individuals vulnerable to dopamine deregulation. In contemporary society, this is often compounded by abuse of drugs such as amphetamines and cannabis, which then propel the individual into a state of dopamine-induced misinterpretation of the environment. Certain types of social adversity such as migration and social isolation, as well as affective change can also contribute to this. Thereafter, biased cognitive appraisal processes result in delusional interpretation of the abnormal perceptual experiences. Thus, a plausible model of the onset of psychosis needs to draw not only on neuroscience, but also on the insights of social psychiatry and cognitive psychology.

Outreach and support in south London (OASIS): implementation of a clinical service for prodromal psychosis and the at risk mental state.

BACKGROUND: While recent research points to the potential benefits of clinical intervention before the first episode of psychosis, the logistical feasibility of this is unclear. AIMS: To assess the feasibility of providing a clinical service for people with prodromal symptoms in an inner city area where engagement with mental health services is generally poor. METHOD: Following a period of liaison with local agencies to promote the service, referrals were assessed and managed in a primary care setting. Activity of the service was audited over 30 months. RESULTS: People with prodromal symptoms were referred by a range of community agencies and seen at their local primary care physician practice. Over 30 months, 180 clients were referred; 58 (32.2%) met criteria for an at risk mental state, most of whom (67.2%) had attenuated psychotic symptoms. Almost 30% were excluded due to current or previous psychotic illness, of which two-thirds were in the first episode of psychosis. The socio-demographic composition of the 'at risk' group reflected that of the local population, with an over-representation of clients from an ethnic minority. Over 90% of suitable clients remained engaged with the service after 1 year. CONCLUSION: It is feasible to provide a clinical service for people with prodromal symptoms in a deprived inner city area with a large ethnic minority population.

The long-term effectiveness of cognitive behavior therapy for psychosis within a routine psychological therapies service.

Randomised controlled trials (RCTs) have shown the efficacy of CBTp, however, few studies have considered its long-term effectiveness in routine services. This study reports the outcomes of clients seen in a psychological therapies clinic, set up following positive results obtained from an RCT (Peters et al., 2010). The aims were to evaluate the effectiveness of CBTp, using data from the service's routine assessments for consecutive referrals over a 12 years period, and assess whether gains were maintained at a 6+ months' follow-up. Of the 476 consenting referrals, all clients (N = 358) who received ≥5 therapy sessions were offered an assessment at four time points (baseline, pre-, mid-, and end of therapy) on measures assessing current psychosis symptoms, emotional problems, general well-being and life satisfaction. A sub-set (N = 113) was assessed at a median of 12 months after finishing therapy. Following the waiting list (median of 3 months) clients received individualized, formulation-based CBTp for a median number of 19 sessions from 121 therapists with a range of experience receiving regular supervision. Clients showed no meaningful change on any measure while on the waiting list (Cohen's d <= 0.23). In contrast, highly significant improvements following therapy, all of which were significantly greater than changes during the waiting list, were found on all domains assessed (Cohen's d: 0.44-0.75). All gains were maintained at follow-up (Cohen's d: 0.29-0.82), with little change between end of therapy and follow-up (Cohen's d <= 0.18). Drop-out rate from therapy was low (13%). These results demonstrate the positive and potentially enduring impact of psychological therapy on a range of meaningful outcomes for clients with psychosis. The follow-up assessments were conducted on only a sub-set, which may not generalize to the full sample. Nevertheless this study is the largest of its kind in psychosis, and has important implications for the practice of CBTp in clinical services.

Misattribution of external speech in patients with hallucinations and delusions.

BACKGROUND: One of the main cognitive models of positive symptoms in schizophrenia proposes that they arise through impaired self-monitoring. This is supported by evidence of behavioural deficits on tasks designed to engage self-monitoring, but these deficits could also result from an externalising response bias. We examined whether patients with hallucinations and delusions would demonstrate an externalising bias on a task that did not involve cognitive self-monitoring. METHOD: Participants passively listened (without speaking) to recordings of single adjectives spoken in their own and another person's voice, and made self/nonself judgements about their source. The acoustic quality of recorded speech was experimentally manipulated by altering the pitch. Fifteen patients with schizophrenia who were currently experiencing hallucinations and delusions, 13 patients with schizophrenia not experiencing current hallucinations and delusions and 15 healthy controls were compared. RESULTS: When listening to distorted words, patients with hallucinations and delusions were more likely than both the group with no hallucinations and delusions and the control group to misidentify their own speech as alien (i.e. spoken by someone else). Across the combined patient groups, the tendency to misidentify self-generated speech as alien was positively correlated with current severity of hallucinations but not with ratings of delusions or positive symptoms in general. CONCLUSIONS: These findings indicate that patients with hallucinations and delusions are prone to misidentifying their own verbal material as alien in a task which does not involve cognitive self-monitoring. This suggests that these symptoms are related to an externalising bias in the processing of sensory material, and not solely a function of defective self-monitoring.

A comparison of auditory hallucinations in a psychiatric and non-psychiatric group.

OBJECTIVES: To compare auditory hallucinations in a psychiatric and non-psychiatric sample. DESIGN: Between-participants group design: a psychiatric group of 14 patients with schizophrenia, and a non-psychiatric group of 16 participants with tinnitus. METHOD: Participants were interviewed using the Mental Health Research Institute Unusual Perceptions Scale (MUPS). RESULTS: The type of hallucinations differed: participants with tinnitus predominantly heard music, whereas the patients with schizophrenia heard voices speaking. The groups also differed in their explanations of the hallucinations. However, there were similarities in contributory factors, emotional responses and coping strategies. CONCLUSIONS: The study highlights the multi-dimensional nature of the auditory hallucinatory experience, and opportunities for intervention.

Psychological therapies for auditory hallucinations (voices): current status and key directions for future research.

This report from the International Consortium on Hallucinations Research considers the current status and future directions in research on psychological therapies targeting auditory hallucinations (hearing voices). Therapy approaches have evolved from behavioral and coping-focused interventions, through formulation-driven interventions using methods from cognitive therapy, to a number of contemporary developments. Recent developments include the application of acceptance- and mindfulness-based approaches, and consolidation of methods for working with connections between voices and views of self, others, relationships and personal history. In this article, we discuss the development of therapies for voices and review the empirical findings. This review shows that psychological therapies are broadly effective for people with positive symptoms, but that more research is required to understand the specific application of therapies to voices. Six key research directions are identified: (1) moving beyond the focus on overall efficacy to understand specific therapeutic processes targeting voices, (2) better targeting psychological processes associated with voices such as trauma, cognitive mechanisms, and personal recovery, (3) more focused measurement of the intended outcomes of therapy, (4) understanding individual differences among voice hearers, (5) extending beyond a focus on voices and schizophrenia into other populations and sensory modalities, and (6) shaping interventions for service implementation.

Auditory verbal hallucinations in persons with and without a need for care.

Auditory verbal hallucinations (AVH) are complex experiences that occur in the context of various clinical disorders. AVH also occur in individuals from the general population who have no identifiable psychiatric or neurological diagnoses. This article reviews research on AVH in nonclinical individuals and provides a cross-disciplinary view of the clinical relevance of these experiences in defining the risk of mental illness and need for care. Prevalence rates of AVH vary according to measurement tool and indicate a continuum of experience in the general population. Cross-sectional comparisons of individuals with AVH with and without need for care reveal similarities in phenomenology and some underlying mechanisms but also highlight key differences in emotional valence of AVH, appraisals, and behavioral response. Longitudinal studies suggest that AVH are an antecedent of clinical disorders when combined with negative emotional states, specific cognitive difficulties and poor coping, plus family history of psychosis, and environmental exposures such as childhood adversity. However, their predictive value for specific psychiatric disorders is not entirely clear. The theoretical and clinical implications of the reviewed findings are discussed, together with directions for future research.

The characteristic features of auditory verbal hallucinations in clinical and nonclinical groups: state-of-the-art overview and future directions.

Despite a growing interest in auditory verbal hallucinations (AVHs) in different clinical and nonclinical groups, the phenomenological characteristics of such experiences have not yet been reviewed and contrasted, limiting our understanding of these phenomena on multiple empirical, theoretical, and clinical levels. We look at some of the most prominent descriptive features of AVHs in schizophrenia (SZ). These are then examined in clinical conditions including substance abuse, Parkinson's disease, epilepsy, dementia, late-onset SZ, mood disorders, borderline personality disorder, hearing impairment, and dissociative disorders. The phenomenological changes linked to AVHs in prepsychotic stages are also outlined, together with a review of AVHs in healthy persons. A discussion of key issues and future research directions concludes the review.