Active clinical trials for "Delusions"

The study is a randomised, assessor-blinded parallel-groups superiority clinical trial fulfilling the CONSORT criteria for non-pharmacological treatment. A total of 256 patients will be allocated to either Cognitive Behavioural Virtual Reality Therapy plus treatment as usual, versus traditional CBT for psychosis plus treatment as usual. All participants will be assessed at baseline and 3- and 9 months post baseline. A stratified block-randomisation with concealed randomisation sequence will be conducted. Independent assessors blinded to the treatment will evaluate outcome. Analysis of outcome will be carried out with the intention to treat principles.

The project aims to evaluate the efficacy of a therapeutic video game that incorporates elements from metacognitive training on delusions and jumping-to-conclusions in patients with psychotic disorders.

The purpose of this study is to examine how Bayesian belief updating changes throughout psychotherapeutic treatment for persecutory delusions. Specifically, individuals with a psychotic disorder diagnosis who endorse both a current persecutory delusion with strong conviction and significant worry will be recruited and randomized to receive either a CBT-based worry intervention for persecutory delusions or an active control condition (befriending therapy). The investigators will examine: 1) whether belief updating parameters change as delusion severity changes, 2) whether CBT contributes to greater change in belief updating parameters than befriending therapy, and 3) whether neural correlates of belief updating parameters, as measured using functional magnetic resonance imaging (fMRI), predict treatment response.

This research project aims to understand the brain mechanisms behind the manifestation of psychotic symptoms in Alzheimer´s disease (AD), and nature of the unique relationship with tau pathology. Amongst the cognitive manifestations of psychosis are impairments related to frontal circuits (social cognition, working memory and executive function deficits). The investigator's previous work suggests a role of tau pathology (one of the hallmarks of AD neuropathology) in the manifestation of psychosis in AD. However, the cerebral mechanisms that underly this association remain poorly understood. The overarching aim of the study is is to investigate the mechanisms by which tau network pathology may promote the presentation of psychosis in AD.

This study will investigate dentate gyrus (DG) and hippocampal CA3 sub field function, using the pattern separation paradigm, as reflected by the difference in brain activation in response to same-as-previously- seen (OLD) vs. similar-to-previously-seen (SIM) objects in first episode psychosis (FEP) subjects before and after anti psychotic treatment and in matched healthy controls (HC). The current study uses three novel high-resolution task-based and post-encoding resting fMRI measures to probe hippocampal circuitry in delusions. It will also study CA1 function, using a sequential associative mismatch paradigm, as reflected by activation of CA1 in response to mismatching information compared to memory of that stimulus in FEP subjects before and after antipsychotic treatment and in matched HC. Finally, this study will evaluate plasticity of hippocampal intrinsic functional connectivity (IFC) in response to memory consolidation, using an encoding-plasticity paradigm, in FEP subjects before and after anti psychotic treatment and in matched HC. For each of the three imaging projects, a total of 50 FEP subjects and 50 matched healthy controls (HC) will be studied; hence, 300 subjects will be studied over 5 years. Within each paradigm, medication-naive FEP subjects will be studied at baseline and 8 weeks after starting anti psychotic medication. HC participants will be studied at baseline and 8 weeks later but will not receive any treatment.

The purpose of this study is to assess the effectiveness and safety of risperidone (an antipsychotic medication) versus placebo for the treatment of patients with hallucinations and delusions associated with Alzheimer's disease.

The aim of the present single-blind randomized-controlled therapy study is to assess the efficacy of a new form of Cognitive Behavioral Therapy for delusions with a focus on emotion regulation, improvement of self-esteem and sleep quality (CBTd-E).

People with a schizophrenia spectrum diagnosis often experience distressing worries or beliefs about others intending to cause them harm (also known as paranoia). Paranoid beliefs are associated with significant distress and disruption to the person's life. This results in high use of services and costs to mental health providers. The National Institute of Clinical Excellence recommends that cognitive behavioural therapy for psychosis (CBTp) is offered to everybody with a schizophrenia spectrum psychosis. The latest meta analyses report improved outcomes, and reduced inpatient stays following CBTp, making it a cost effective intervention. Although improved outcomes have been obtained by therapies, CBTp has only small to moderate effects on paranoid beliefs. Further, training therapists to competently deliver CBTp is intensive, expensive and takes up to a year. CBTp is therefore not widely available to service users, resulting in inequalities in access to care. The investigators are seeking to improve outcomes and accessibility of CBTp for people with distressing, paranoid beliefs. The proposed research programme aims to conduct a feasibility study of a brief therapeutic intervention, aimed at targeting and improving anxiety processes that are causally implicated in paranoia (Freeman et al, 2015). The investigators have preliminary evidence indicating that the pilot intervention, with interactive multimedia content, reduced distressing beliefs and improved coping (Freeman et al, 2015). Participants also reported they found the therapy acceptable, enjoyable and useful. Based on these results, the investigators have further modified the intervention. The feasibility and efficacy of the therapy will be investigated in a randomised controlled design (n = 34). Please note the protocol has been been amended to exclude a pilot trial of a second brief intervention targeting reasoning styles in paranoia, as since the initial protocol was developed we have obtained data from two randomised pilot studies demonstrating its feasibility and acceptability (Garety et al, 2015; Waller et al, 2015). A further pilot trial of the reasoning styles intervention is therefore not indicated.

The main objective of this study is to determine the preliminary efficacy of Paranoia-Focused Cognitive Behavioral Therapy (PFCBT) relative to standard care in the treatment of persecutory delusions in patients diagnosed with schizophrenia or schizoaffective Disorder.

Schizophrenia is a severe mental disorder which is accompanied by an enormous individual and societal burden. Despite established efficacy of cognitive behavioral therapy for psychosis (CBTp), its dissemination into routine mental health care remains poor. National regulations such as the National Institute for Health and Care Excellence (NICE) guideline in the United Kingdom recommend that CBTp should be offered to every person with psychotic symptoms, but more than 50% do not receive even a single session of CBTp. In Germany, CBTp is virtually not represented in the psychotherapy health service. Internet-based cognitive behavioral therapy (CBT) in a self-help format has been proven feasible and effective in anxiety and depressive disorders. Recently, Internet-based (self-help) interventions are also deployed via smartphone apps. The feasibility of Internet-based treatments for people with schizophrenia is well documented for Internet-based interventions (e.g., medication management) and also reported for smartphone interventions. However, there is a dearth of empirical studies precluding a conclusive picture. As far as the investigators know, there is only one study encompassing 90 participants with psychosis that investigated an Internet-based intervention with symptom-specific, cognitive behavioral interventions, which is from the investigators' research group. The unique features of the proposed project are 1) the first-time evaluation of a symptom-oriented, CBTp-based self-help treatment for people with psychotic symptoms via Internet, enhanced with smartphone assistance. The study is set up as randomized controlled trial (RCT) with active treatment versus a wait-list control group. It evaluates a combined Internet-based guided self-help treatment for persecutory ideation and auditory verbal hallucinations. The active treatment condition consists of access to a self-help website including regular written electronic contact with a guide and access to smartphone-based interactive worksheets (apps). The trials combine the low-threshold advantages of an online approach (e.g., anonymity) with the virtues of a clinical trial (e.g., symptom assessment and diagnostic verification via Interview). The primary outcome measure is the Positive and Negative Syndrome Scale (PANSS). Secondary outcome measures include self-reported symptom measures (Paranoia Checklist; Beliefs About Voices Questionnaire revised), completion rates, drop-out from the intervention, general symptomatology, side-effects, and client satisfaction. The project will help to answer the empirical question whether CBTp-based interventions in a purely Internet-based self-help format are effective. Positive findings would pave the way for an easy-to-access treatment option for patients with psychotic symptoms who currently are deprived of psychotherapeutic treatment.