Cognitive therapy for psychosis in schizophrenia: an effect size analysis

Cognitive behavior therapy for schizophrenia: effect sizes, clinical models, and methodological rigor

BACKGROUND

Guidance in the United States and United Kingdom has included cognitive behavior therapy for psychosis (CBTp) as a preferred therapy. But recent advances have widened the CBTp targets to other symptoms and have different methods of provision, eg, in groups.

AIM

To explore the effect sizes of current CBTp trials including targeted and nontargeted symptoms, modes of action, and effect of methodological rigor.

METHOD

Thirty-four CBTp trials with data in the public domain were used as source data for a meta-analysis and investigation of the effects of trial methodology using the Clinical Trial Assessment Measure (CTAM).

RESULTS

There were overall beneficial effects for the target symptom (33 studies; effect size = 0.400 [95% confidence interval [CI] = 0.252, 0.548]) as well as significant effects for positive symptoms (32 studies), negative symptoms (23 studies), functioning (15 studies), mood (13 studies), and social anxiety (2 studies) with effects ranging from 0.35 to 0.44. However, there was no effect on hopelessness. Improvements in one domain were correlated with improvements in others. Trials in which raters were aware of group allocation had an inflated effect size of approximately 50%-100%. But rigorous CBTp studies showed benefit (estimated effect size = 0.223; 95% CI = 0.017, 0.428) although the lower end of the CI should be noted. Secondary outcomes (eg, negative symptoms) were also affected such that in the group of methodologically adequate studies the effect sizes were not significant.

CONCLUSIONS

As in other meta-analyses, CBTp had beneficial effect on positive symptoms. However, psychological treatment trials that make no attempt to mask the group allocation are likely to have inflated effect sizes. Evidence considered for psychological treatment guidance should take into account specific methodological detail.

Evaluation of a Culturally Tailored Skills Intervention for Latinos with Persistent Psychotic Disorders

Fifty-nine Latino participants diagnosed with persistent psychotic disorders were assigned to either a culturally tailored skills-training intervention (n = 21), an equivalent non-tailored intervention (n = 15), or a community-based support group (n = 23). Participants completed a number of skills-based performance assessments (e.g., UCSD performance-based skills assessment; UPSA) and a well-being measure prior to and immediately post-treatment. Compared to those in the non-tailored intervention, participants receiving the tailored intervention showed significant improvement in several outcomes. These results indicate that Latino individuals with persistent psychotic disorders benefit from interventions which consider cultural values and mores.

Schizophrenia, "Just the Facts": what we know in 2008 part 1: overview

For every disorder, there is a set of established findings and accepted constructs upon which further understanding is built. The concept of schizophrenia as a disease entity has been with us for a little more than a century, although descriptions resembling this condition predate this conceptualization. In 1988, for the inaugural issue of Schizophrenia Research, at the invitation of the founding editors, a senior researcher, since deceased (RJ Wyatt) published a summary of generally accepted ideas about the disorder, which he termed "the facts" of schizophrenia. Ten years later, in conjunction with two of the authors (MSK, RT), he compiled a more extensive set of "facts" for the purpose of evaluating conceptual models or theoretical constructs developed to understand the nature of schizophrenia. On the 20th anniversary of this journal, we update and substantially expand our effort to periodically summarize the current body of information about schizophrenia. We compile a body of seventy-seven representative major findings and group them in terms of their specific relevance to schizophrenia -- etiologies, pathophysiology, clinical manifestations, and treatments. We rate each such "fact" on a 0-3 scale for measures of reproducibility, whether primary to schizophrenia, and durability over time. We also pose one or more critical questions with reference to each "fact", answers to which might help better elucidate the meaning of that finding for our understanding of schizophrenia. We intend to follow this paper with the submission to the journal of a series of topic-specific articles, critically reviewing the evidence.

Neuropsychological predictors of functional outcome in Cognitive Behavioral Social Skills Training for older people with schizophrenia

Cognitive Behavioral Social Skills Training (CBSST) is a 24-session weekly group therapy intervention to improve functioning in people with schizophrenia. In our prior randomized clinical trial comparing treatment as usual (TAU) with TAU plus group CBSST (Granholm, E., McQuaid, J.R., McClure, F.S., Auslander, L., Perivoliotis, D., Pedrelli, P., Patterson, T., Jeste, D.V., 2005. A randomized controlled trial of cognitive behavioral social skills training for middle-aged and older outpatients with chronic schizophrenia. Am. J. Psychiatry 162, 520-529.), participants with schizophrenia in CBSST showed significantly better functional outcome than participants in TAU. The present study was a secondary analysis of neuropsychological predictors of functional outcome in our prior CBSST trial. We examined (1) whether neuropsychological impairment at baseline moderated functional outcome in CBSST relative to TAU, and (2) whether improvement in neuropsychological abilities mediated improvement in functional outcome in CBSST. Attention, verbal learning/memory, speed of processing, and executive functions were assessed at baseline, end of treatment, and 12-month follow-up. Greater severity of neuropsychological impairment at baseline predicted poorer functional outcome for both treatment groups (nonspecific predictor), but the interaction between severity of neuropsychological impairment and treatment group was not significant (no moderation). Effect sizes for the difference between treatment groups on functional outcome measures at 12-month follow-up were similar for participants with relatively mild (d=.44-.64) and severe (d=.29-.60) neuropsychological impairment. Results also did not support the hypothesis that improvement in neuropsychological abilities mediated improvement in functioning in CBSST. Adding CBSST to standard pharmacologic care, therefore, improved functioning relative to standard care alone, even for participants with severe neuropsychological impairment, and this improvement in functioning was not related to improvement in neuropsychological abilities in CBSST.

A randomized controlled trial of cognitive-behavior therapy for persistent symptoms in schizophrenia: a five-year follow-up

Meta-analyses of randomized controlled trials support the efficacy of cognitive behavioral therapy (CBT) in the treatment of symptoms of schizophrenia refractory to antipsychotic medication. This article addresses the issue of medium term durability. A five-year follow-up was undertaken of a sample of 90 subjects who participated in a randomized controlled trial of CBT and befriending (BF). Patients received routine care throughout the trial and the follow-up period. Intention to treat multivariate analysis was performed by an independent statistician following multiple imputation of missing data. Fifty-nine out of ninety patients were followed up at 5 years (CBT=31, BF=28). In comparison to BF and usual treatment, CBT showed evidence of a significantly greater and more durable effect on overall symptom severity (NNT=10.36, CI -10.21, 10.51) and level of negative symptoms (NNT=5.22, CI -5.06 -5.37). No difference was found between CBT and BF on either overall symptoms of schizophrenia or depression. The initial cost of an adjunctive course of CBT for individuals with medication refractory schizophrenia may be justified in light of symptomatic benefits that persist over the medium term.

Cognitive-behavioral therapy for medication-resistant schizophrenia: a review

Research meta-analyses have found that cognitive-behavioral therapy (CBT) is beneficial for persistent symptoms of schizophrenia. This review describes and updates the evidence base for this statement. A review of the existing literature (Medline, PsychInfo, and Embase) was carried out according to the guidelines for systematic reviews. Based on the findings of this review, the updated conclusion is that CBT has emerged as an effective adjuvant to antipsychotic medication in the treatment of persistent symptoms of schizophrenia. Studies of the use of CBT in the prodromal phase of psychosis and in combination with family therapy are currently underway.

Measuring Adherence in CBT for Psychosis: A Psychometric Analysis of an Adherence Scale

This paper reports the psychometric properties of a CBT for psychosis adherence scale, the Revised Cognitive Therapy for Psychosis Adherence Scale (R-CTPAS). The scale's factor structure, inter-rater reliability and concurrent validity were analysed in a sample of 67 audiotaped sessions of CBT for psychosis. The concurrent validity of the scale was examined through comparison with the Cognitive Therapy Scale (CTS, Young and Beck, 1980). Principal components analysis of the trial data suggested three factors: “engagement/assessment work”, “relapse prevention work” and “formulation/schema work”. Satisfactory levels of inter-rater reliability were established between rater dyads. Moderate correlations with the CTS provided an indication of concurrent validity. The R-CTPAS is concluded to be a reliable and useful instrument that can assess adherence to CBT for psychosis using the Fowler, Garety and Kuipers (1995) therapy model.

Psychotic-spectrum illness and family-based treatments: a case-based illustration of the underuse of family interventions

Psychotic-spectrum illnesses (PSIs) are a significant cause of relational dysfunction and vocational disability, and result in substantial economic costs to society. The impact of family process, particularly "expressed emotion," on influencing the relapse rate of PSIs is now well documented. Over the last two decades, evidence has emerged supporting family-based treatments that decrease family stress (e.g., psychoeducation, training in problem solving, and improved communication), reduce the relapse rate, and improve medication adherence and social functioning among patients with PSIs. Family interventions are now included in the Expert Consensus Guidelines and the Agency for Health Care Policy and Research/National Institute of Mental Health (AHCPR/NIMH) Schizophrenia Patient Outcomes Research Team (PORT) recommendations for the treatment of schizophrenia. Nevertheless, family-based treatments are underused in the care of PSI patients. Building upon a case example, this article explores the barriers to implementing family interventions in the acute and outpatient treatment of these patients. The case discussion highlights the convergence of problems in the mental health care system with clinicians' typical capacities and practices, difficulties intrinsic to the nature of PSI itself, and the burden and stigmatization of families of the severely mentally ill. Taken together, these factors undercut the implementation of evidence-based family interventions.

Kognitive Verhaltenstherapie von Wahn und Halluzinationen

Zusammenfassung. Theoretischer Hintergrund: In den letzten 10-15 Jahren sind eine Reihe von kognitiv-behavioralen Interventionen entwickelt und evaluiert worden, die auf eine direkte Reduktion von Wahn und Halluzinationen abzielen. Gleichzeitig mehren sich Arbeiten aus der Grundlagenforschung zu Schizophrenie, die darauf hindeuten, dass Wahn und Halluzinationen mit spezifischen kognitiven Verarbeitungsstilen assoziiert sind. Als solche gelten unter anderem voreiliges Schlussfolgern, Schwierigkeiten in der Perspektivenübernahme (Theory-of-Mind), external-personale Attributionsstile und fehlerhafte Quellenattribution. Ziele: 1) die wichtigsten experimentellen Untersuchungen und Ergebnisse zu kognitiven Prozessen bei Wahn und Halluzinationen verständlich darzustellen, 2) eine Einführung in die therapeutischen Interventionen zur Veränderung der Symptome zu bieten und 3) zu bewerten, inwieweit die experimentellen Befunde in die Entwicklung von Therapiestrategien zu Wahn und Halluzinationen eingeflossen sind, bzw. durch spezifische Befunde gedeckt werden. Schlussfolgerungen: Die Mehrzahl der Interventionen setzt indirekt an den gefundenen kognitiven Auffälligkeiten an, wobei offen bleibt, in wie weit ihre Wirkung auf eine Veränderung der kognitiven Verarbeitungsstile zurückgeht. Obwohl die kognitive Umstrukturierung dysfunktionaler Selbstkonzepte einen wesentlichen Bestandteil der kognitiven Interventionen darstellt, ist die empirische Evidenz für die Rolle negativer Selbstkonzepte bei der Entstehung von Wahn und Halluzinationen bislang uneindeutig.

Cognitive behavioral therapy reduces suicidal ideation in schizophrenia: results from a randomized controlled trial

Patients with schizophrenia are at high risk of suicide. Cognitive behavior therapy (CBT) has been shown to reduce symptoms in schizophrenia. This study examines whether CBT also changes the level of suicidal ideation in patients with schizophrenia compared to a control group. Ninety ambulatory patients with symptoms of schizophrenia resistant to conventional antipsychotic medication were randomized to CBT or befriending. They were assessed using the Comprehensive Psychopathological Rating Scale, including a rating of suicidal ideation at baseline, post intervention, and after 9 months. Post-hoc analysis revealed that CBT provided significant reductions in suicidal ideation at the end of therapy, and sustained at the follow-up. Further research is required to substantiate these findings and determine the process and mechanisms through which this reduction is achieved.

Efficacy of cognitive nursing intervention for voice hearing

PROBLEM

Many individuals who hear negative voices are troubled by their voices even when they adhere to prescribed neuroleptic medication regimens. At the same time, recent clinical trials provide evidence that structured, cognitive intervention can reduce distress tied to refractory auditory hallucinations and other psychiatric symptoms.

PURPOSE

The purpose of this randomized controlled trial was to determine whether usual care (UC), or usual care plus 12, 90-min episodes of cognitive nursing intervention (UC + CNI) led to sustained improvement in the psychiatric symptoms and self-esteem of 65 voice hearers assigned a diagnosis of schizophrenia or schizoaffective disorder. ANALYSIS AND FINDINGS: Analysis of covariance with repeated measures procedures indicate that the 44 participants exposed to UC + CNI, were significantly more likely than the 21 participants exposed to UC only, to sustain significant improvement in psychiatric symptoms and self-esteem 1 year following treatment.

IMPLICATIONS

These findings provide encouragement for nurses to further develop and investigate cognitive strategies to treat psychiatric symptoms of voice hearers.

More than just a place to talk: young people's experiences of group psychological therapy as an early intervention for auditory hallucinations

OBJECTIVES

Auditory hallucinations are extremely distressing, particularly when occurring during adolescence. They may be most responsive to psychological intervention during a three-year critical period following symptom-onset, but as yet no studies have investigated voices groups for young participants with adolescent-onset psychosis. The aim of the current study is to explore the experience of group-CBT amongst a group of young people experiencing distressing auditory hallucinations.

DESIGN

This project was planned and conducted in the tradition of idiographic, qualitative psychology. A small purposive sample was selected, and in-depth, open-ended interviews were conducted, in order to generate and explore rich, experiential accounts which are clearly situated and contextualized.

METHODS

Eight participants who had completed a cognitive behavioural group intervention were interviewed using a semi-structured interview schedule. The transcribed data were analysed according to the principles of Interpretative Phenomenological Analysis (IPA; Smith, Osborn, & Jarman, 1999).

RESULTS

Two superordinate themes emerged. The first describes experiential features of the respondents' accounts of group therapy. The second theme posits a cyclical relationship between four key factors: the content of the hallucinated voices, the participants' explanations for, and reactions to these voices, and thus, their ability to cope with them.

CONCLUSIONS

'Voices groups' are appreciated by young people with auditory hallucinations, as sources of therapy, information, and support. These results suggest a number of testable hypotheses about the efficacy of group treatment and its future development.

Does structured clinical supervision during psychosocial intervention education enhance outcome for mental health nurses and the service users they work with?

This study aimed to assess whether clinical supervision provided by workplace-based supervisors can enhance outcomes for mental health nurses attending a psychosocial intervention education programme and the service users whom they work with. A quasi-experimental controlled design was used. The main outcome measure was student knowledge and attitudes towards individuals with psychosis and their caregivers. Secondary outcome measures for service users included the KGV (M) symptom scale and the Social Functioning Scale. Students in the experimental group demonstrated a significant increase in knowledge of psychological interventions compared with the control group. Service users seen by the students in the experimental group showed significantly greater reductions in positive psychotic symptoms and total symptoms compared with those seen by students in the control group. Workplace clinical supervision may offer additional benefit to nurses attending psychosocial intervention courses. Further research adopting more robust designs is required to support these tentative findings.

A card game for the treatment of delusional ideas: a naturalistic pilot trial

BACKGROUND

"Michael's game" is a card game which aims at familiarizing healthcare professionals and patients with cognitive behavioral therapy of psychotic symptoms. This naturalistic study tests the feasibility and the impact of the intervention in various naturalistic settings.

METHOD

Fifty five patients were recruited in seven centers. They were assessed in pre and post-test with the Peters Delusion Inventory--21 items (PDI-21).

RESULTS

Forty five patients completed the intervention significantly reducing their conviction and preoccupation scores on the PDI-21.

CONCLUSION

This pilot study supports the feasibility and effectiveness of "Michael's game" in naturalistic setting. Additional studies could validate the game in a controlled fashion.

Integrated psychological therapy (IPT) for schizophrenia: is it effective?

Against the background of evidence-based treatments for schizophrenia, nowadays the implementation of specific cognitive and behavioral interventions becomes more important in the standard care of these patients. Over the past 25 years, research groups in 9 countries have carried out 30 independent evaluations of Integrated Psychological Therapy (IPT), a group program that combines neurocognitive and social cognitive interventions with social skills approaches for schizophrenic patients. The aim of the present study was to evaluate the effectiveness of IPT under varying treatment and research conditions in academic and nonacademic sites. In a first step, all 30 published IPT studies with the participation of 1393 schizophrenic patients were included in the meta-analysis. In a second step, only high-quality studies (HQS) (7 studies including 362 patients) were selected and analyzed to check whether they confirmed the results of the first step. Positive mean effect sizes favoring IPT over control groups (placebo-attention conditions, standard care) were found for all dependent variables, including symptoms, psychosocial functioning, and neurocognition. Moreover, the superiority of IPT continued to increase during an average follow-up period of 8.1 months. IPT obtained similarly favorable effects across the different outcome domains, assessment formats (expert ratings, self-reports, and psychological tests), settings (inpatient vs outpatient and academic vs nonacademic), and phases of treatment (acute vs chronic). The HQS confirmed the results of the complete sample. The analysis indicates that IPT is an effective rehabilitation approach for schizophrenia that is robust across a wide range of patients and treatment conditions.

Efficacy of psychological therapy in schizophrenia: conclusions from meta-analyses

Over the past years, evidence for the efficacy of psychological therapies in schizophrenia has been summarized in a series of meta-analyses. The present contribution aims to provide a descriptive survey of the evidence for the efficacy of psychological therapies as derived from these meta-analyses and to supplement them by selected findings from an own recent meta-analysis. Relevant meta-analyses and randomized controlled trials were identified by searching several electronic databases and by hand searching of reference lists. In order to compare the findings of the existing meta-analyses, the reported effect sizes were extracted and transformed into a uniform effect size measure where possible. For the own meta-analysis, weighted mean effect size differences between comparison groups regarding various types of outcomes were estimated. Their significance was tested by confidence intervals, and heterogeneity tests were applied to examine the consistency of the effects. From the available meta-analyses, social skills training, cognitive remediation, psychoeducational coping-oriented interventions with families and relatives, as well as cognitive behavioral therapy of persistent positive symptoms emerge as effective adjuncts to pharmacotherapy. Social skills training consistently effectuates the acquisition of social skills, cognitive remediation leads to short-term improvements in cognitive functioning, family interventions decrease relapse and hospitalization rates, and cognitive behavioral therapy results in a reduction of positive symptoms. These benefits seem to be accompanied by slight improvements in social functioning. However, open questions remain as to the specific therapeutic ingredients, to the synergistic effects, to the indication, as well as to the generalizability of the findings to routine care.

Psychoeducation: a basic psychotherapeutic intervention for patients with schizophrenia and their families

Psychoeducation was originally conceived as a composite of numerous therapeutic elements within a complex family therapy intervention. Patients and their relatives were, by means of preliminary briefing concerning the illness, supposed to develop a fundamental understanding of the therapy and further be convinced to commit to more long-term involvement. Since the mid 1980s, psychoeducation in German-speaking countries has evolved into an independent therapeutic program with a focus on the didactically skillful communication of key information within the framework of a cognitive-behavioral approach. Through this, patients and their relatives should be empowered to understand and accept the illness and cope with it in a successful manner. Achievement of this basic-level competency is considered to constitute an "obligatory-exercise" program upon which additional "voluntary-exercise" programs such as individual behavioral therapy, self-assertiveness training, problem-solving training, communication training, and further family therapy interventions can be built. Psychoeducation looks to combine the factor of empowerment of the affected with scientifically founded treatment expertise in as efficient a manner as possible. A randomized multicenter study based in Munich showed that within a 2-year period such a program was related to a significant reduction in rehospitalization rates from 58% to 41% and also a shortening of intermittent days spent in hospital from 78 to 39 days. Psychoeducation, in the form of an obligatory-exercise program, should be made available to all patients suffering from a schizophrenic disorder and their families.

Functional adaptation skills training (FAST): a randomized trial of a psychosocial intervention for middle-aged and older patients with chronic psychotic disorders

OBJECTIVE

Behavioral interventions designed to improve functioning of older patients with schizophrenia and other chronic psychotic disorders have the potential to significantly increase patients' independence and quality of life. This study evaluated a psychosocial intervention designed to improve everyday living skills of middle-aged and older outpatients with chronic psychotic disorders.

METHODS

A total of 240 patients with a DSM-IV-based chart diagnosis of schizophrenia or schizoaffective disorder participated in a 24-week, randomized controlled trial comparing a behavioral group intervention called "Functional Adaptations and Skills Training" (FAST; n=124) to a time-equivalent attention-control (AC; n=116) group focused on improving functional skills.

RESULTS

Compared to participants randomized to AC, those in the FAST intervention demonstrated significant improvement in everyday living skills (p=.046) and social skills (p=.003), but not medication management skills (p=.268).

CONCLUSIONS

Results suggest that middle-aged and older patients with psychotic disorders may benefit from participation in interventions designed specifically to improve functional skills.

Cognitive intervention for voice hearers

Cognitive behavioral therapy is an emerging treatment being used to attenuate negative thoughts and emotions tied to the formation, expression, and maintenance of verbal auditory hallucinations. This paper describes the theoretical underpinnings for the intervention and a clinical application of a prototype cognitive nursing intervention for treating faulty thinking and beliefs linked with problematic voice hearing experiences. The paper ends with a review of current evidence and implications concerning the efficacy of cognitive intervention approaches with voice hearers.

Schizophrenia should be renamed to help educate patients and the public

BACKGROUND

A new name for schizophrenia, reflecting a biopsychosocial conceptualization, may have utility in educating patients and the public. If readily translatable, it would be of great value in transcultural psychiatry. It may be clinically beneficial to psychoeducation in evidence-based treatment modalities such as medication management, multifamily group psycho-education and cognitive therapy.

DISCUSSION

Neuro-Emotional Integration Disorder (NEID) is proposed as the biopsychosocial candidate term to replace schizophrenia. The following subtypes are proposed: defensive type replacing paranoid, motoric type replacing catatonic, Brief Neuro-Emotional-Integration Breakdown (B-NEIB) replacing brief psychotic episode, NEID-Time Limited replacing schizophreniform disorder. Schizoaffective disorder might be termed NEID-Bipolar type. Anti-psychotic medication would be termed NEI-Enhancing medication.

CONCLUSIONS

By emphasizing the neuropsychiatric basis of this 'highly treatable brain disorder' through its labeling, stigma may ultimately be reduced. Even if the term NEID is not ultimately adopted, the principles outlined here should be helpful in choosing a replacement term for 'schizophrenia'.

Do psychotherapies produce neurobiological effects?

BACKGROUND

An area of recent interest in psychiatric research is the application of neuroimaging techniques to investigate neural events associated with the development and the treatment of symptoms in a number of psychiatric disorders.

OBJECTIVE

To examine whether psychological therapies modulate brain activity and, if so, to examine whether these changes similar to those found with relevant pharmacotherapy in various mental disorders.

METHODS

Relevant data were identified from Pubmed and PsycInfo searches up to July 2005 using combinations of keywords including 'psychological therapy', 'behaviour therapy', 'depression', 'panic disorder', 'phobia', 'obsessive compulsive disorder', 'schizophrenia', 'psychosis', 'brain activity', 'brain metabolism', 'PET', 'SPECT' and 'fMRI'.

RESULTS

There was ample evidence to demonstrate that psychological therapies produce changes at the neural level. The data, for example in depression, panic disorder, phobia and obsessive compulsive disorder (OCD), clearly suggested that a change in patients' symptoms and maladaptive behaviour at the mind level with psychological techniques is accompanied with functional brain changes in relevant brain circuits. In many studies, cognitive therapies and drug therapies achieved therapeutic gains through the same neural pathways although the two forms of treatment may still have different mechanisms of action.

CONCLUSIONS

Empirical research indicates a close association between the 'mind' and the 'brain' in showing that changes made at the mind level in a psychotherapeutic context produce changes at the brain level. The investigation of changes in neural activity with psychological therapies is a novel area which is likely to enhance our understanding of the mechanisms for therapeutic changes across a range of disorders.

Recent approaches to psychological interventions for people at risk of psychosis

With the emerging global focus on early psychosis, indicated prevention in schizophrenia has increasingly become a focus of psychiatric research interests. It has been argued that CBT may have some advantages compared with antipsychotics regarding this issue. According to MEDLINE, EMBASE and Psycinfo two completed randomised controlled trials (RCTs; PACE, Melbourne, Australia; EDIE, Manchester, United Kingdom) and one ongoing RCT with only preliminary results published so far (FETZ, Cologne/Bonn, Germany) on indicated prevention in schizophrenia including manualised and standardised psychological treatment can be identified. The aims of the present paper are to present and discuss the three approaches with regard to (I) inclusion, exclusion and exit criteria, (II) characteristics of interventions and (III) evaluations. All interventions use intake, exclusion and exit criteria, which have been evaluated in prospective follow-along studies. The approaches are based on the general structure and principles of cognitive behavioural therapy which have been developed, applied and evaluated in a wide range of mental health problems. Despite several methodological limitations, the first evaluations indicate some effects with regard to three possible aims of early intervention: (1) improvement of present possible pre-psychotic symptoms, (2) prevention of social decline/stagnation and (3) prevention or delay of progression to psychosis. Even though the first results are promising, we conclude that several ethical issues have to be taken into consideration and further predictive and therapeutic research is needed to judge whether psychological intervention is a realistic option for the treatment of people at risk of psychosis.

"Hitting" voices of schizophrenia patients may lastingly reduce persistent auditory hallucinations and their burden: 18-month outcome of a randomized controlled trial

OBJECTIVE

This study aimed to investigate the outcome of an 18-month randomized controlled trial (RCT) on subjective burden and psychopathology of patients suffering from schizophrenia.

METHOD

An RCT was used to compare hallucination-focused integrative treatment (HIT) and routine treatment (RT) in schizophrenia patients who persistently hear voices. We performed an intent-to-treat analysis on each of the 63 patients who were assessed at baseline, 9, and 18 months. On each of the 3 occasions, the differential effects of the treatment conditions were tested repeatedly. Sex, age, education, and illness (hallucination) duration were used as covariates.

RESULTS

Patients in the experimental group retained improvements over time. Improvements in hallucinations, distress, and negative content of voices remained significant at the 5% level.

CONCLUSION

HIT seems to be an effective treatment strategy with long-lasting effects for treatment-refractory voice-hearing patients.

Acute treatment of inpatients with psychotic symptoms using Acceptance and Commitment Therapy: Pilot results

Cognitive behavior therapy (CBT) has been demonstrated in a number of randomized controlled trials to be efficacious as an adjunctive treatment for psychotic disorders. Emerging evidence suggests the usefulness of CBT interventions that incorporate acceptance/mindfulness-based approaches for this population. The current study extended previous research by Bach and Hayes (2002. The use of Acceptance and Commitment Therapy to prevent the rehospitalization of psychotic patients: A randomized controlled trial. Journal of Consulting and Clinical Psychology, 70, 1129-1139) using Acceptance and Commitment Therapy (ACT) in the treatment of psychosis. Psychiatric inpatients with psychotic symptoms were randomly assigned to enhanced treatment as usual (ETAU) or ETAU plus individual sessions of ACT. At discharge from the hospital, results suggested short-term advantages in the ACT group in affective symptoms, overall improvement, social impairment, and distress associated with hallucinations. In addition, more participants in the ACT condition reached clinically significant symptom improvement at discharge. Although 4-month rehospitalization rates were lower in the ACT group, these differences did not reach statistical significance. Decreases in the believability of hallucinations during treatment were observed only in the ACT condition, and change in believability was strongly associated with change in distress after controlling for change in the frequency of hallucinations. Results are interpreted as largely consistent with the findings of Bach and Hayes and warrant further investigations with larger samples.

Is symptomatic improvement in clinical trials of cognitive-behavioral therapy for psychosis clinically significant?

Although cognitive-behavioral therapy (CBT) is becoming increasingly popular as an adjunctive treatment for psychosis, few studies to date have examined the clinical (in contrast to statistical) significance of treatment gains using standardized methods. The aim of the current study was to investigate the clinical significance of symptomatic reductions reported in trials of CBT for schizophrenia and related disorders using standardized group methods of analysis. An electronic literature search identified 12 studies that met the inclusion criteria of being randomized, controlled trials that compared CBT to routine care alone or to another comparison treatment. The analysis involved the following steps. First, reliable change on symptom measures was examined. Next, the proportion of patients in each study estimated to show clinically significant symptomatic reductions (i.e., two standard deviations) was calculated. When both post-treatment and follow-up data were considered, 42% of CBT conditions compared with only 25% of comparison conditions demonstrated reliable change on at least one psychotic symptom measure per study. Proportions of clinically significant symptomatic improvement in studies showing reliable change were similar between CBT and comparison conditions. Due to the adjunctive nature of CBT for schizophrenia and the limits imposed by the evaluation of group datasets, results of the current study are considered promising but preliminary. Future trials should examine clinical significance using similar standardized methods within studies, as well as broader functional outcome measures, to provide a clearer picture of the benefits derived from this type of intervention.

Do positive schizotypal symptoms predict false perceptual experiences in nonclinical populations?

We examined whether positive schizotypy (i.e., reports of hallucinatory and delusional-like experiences) in nonclinical participants could predict false perceptual experiences during detection of fast-moving words beyond a possible response bias. The participants (N = 160) were assigned to one of two conditions: they were asked either to make presence/absence judgments (loose criterion) or to read aloud every detected word (strict criterion). Regression analysis showed that high levels of positive schizotypy predicted false alarms in the loose condition and false perceptions of words in the strict condition. The obtained effects were independent of detection accuracy, task order, impulsivity, and social desirability. We discuss the results in the context of information processing biases linked to the positive symptomatology of schizophrenia. Clinical and theoretical implications are also considered.

[Group interventions for people with refractory psychosis]

Various types of group interventions exist for people with severe mental disorders such as schziophrenia. The content and theoretical backgrounds vary according to the therapeutic goals as well as the clientele targeted. This article describes three group interventions : 1) one aiming at improving self-esteem, 2) one aiming at improving competence through stress management, and 3) one aiming at diminushing distress linked to psychotic symptoms with cognitive behavior therapy. Details on how to conduct these three group interventions, as well as their clinical and theoretical relevance for individuals with refractory psychosis will be described.

What are the effects of group cognitive behaviour therapy for voices? A randomised control trial

BACKGROUND

Little evidence exists for the effects of psychological treatment on voices even though it is clear that CBT does affect delusions and symptoms overall. This study tested whether a group based on cognitive behavioural principles could produce beneficial effects on hallucinations.

AIM

To test the effectiveness of group CBT on social functioning and severity of hallucinations.

METHOD

Participants were included if they had a diagnosis of schizophrenia and experienced distressing auditory hallucinations (rated on the PANSS). They were randomly allocated to group CBT (N = 45) or a control group who received treatment as usual (N = 40). The two main outcomes were social functioning as measured by the Social Behaviour Schedule and the severity of hallucinations as measured by the total score on the Hallucinations Scale of PSYRATS. Assessments were carried out at baseline, 10 weeks (post therapy) and 36 weeks (six months following therapy).

RESULTS

Mixed random effects models revealed significant improvement in social functioning (effect size 0.63 six months after the end of therapy). There was no general effect of group CBT on the severity of hallucinations. However, there was a large cluster effect of therapy group on the severity of hallucinations such that they were reduced in some but not all of the therapy groups. Improvement in hallucinations was associated with receiving therapy early in the trial and having very experienced therapists (extensive CBT training which included expert supervision for a series of individual cases for at least a year following initial training).

CONCLUSION

Group CBT does improve social functioning but unless therapy is provided by experienced CBT therapists hallucinations are not reduced.

Cognitive-behavioral therapy in the pre-psychotic phase: an exploratory study

Although the efficacy of cognitive-behavioral therapy (CBT) in schizophrenia has been established for persistent psychotic symptoms, little information is available on the effects of CBT in the pre-psychotic phase. We developed a comprehensive CBT program for clients in the early initial prodromal state that showed good feasibility and promising treatment effects in an uncontrolled prospective study. The specificity of these effects needs to be explored in a controlled trial.

Psychosocial treatment in the 21st century

Over the past 50 years, psychosocial treatment has played an increasingly prominent role in helping persons with mental illness live in communities rather than in institutions. This paper briefly reviews evidence for and discusses three forms of treatment-assertive community treatment, supported employment, and cognitive behavior treatment-which have been studied extensively and are widely accepted as effective interventions. Forces are discussed that have shaped these and other psychosocial treatment over the past five decades. Despite the accumulated evidence, many questions remain about the cost-effectiveness and applicability of these treatments in specific populations and service environments. The development of these and other treatments has been, and continues to be, shaped by concerns about rising health care costs, a heightened emphasis on evidence-based treatment and by consumers taking a more active role in determining the services, and outcomes that are most helpful to them.

A randomized comparison of group cognitive-behavioural therapy and group psychoeducation in acute patients with schizophrenia: outcome at 24 months

OBJECTIVE

We compared the effects of a brief group cognitive-behavioural therapy (CBT) and a group psychoeducational (PE) programme in acute patients with schizophrenia 2 years after treatment. At 6-month follow-up, the CBT group had shown significantly less re-hospitalization rates and on a descriptive level higher compliance with medication.

METHOD

Eighty-eight in-patients with acute schizophrenia were randomized to receive a therapy envelope of 8 weeks including either 16 sessions of CBT or eight sessions of PE.

RESULTS

From the initial sample, 43 patients (48.9%) completed the 24-month follow-up. There were no significant group differences regarding re-admission, symptoms or compliance with medication. However, on a descriptive level patients who received CBT on average experienced 21.8% less re-hospitalizations, 71 days less in hospital and higher compliance ratings at the 24-month follow-up.

CONCLUSION

The significant advantages of CBT at short-term follow-up were lost at long-term follow-up. However, on a descriptive level some advantages for CBT remained after 2 years.

The effect of cognitive behavioral treatment on the positive symptoms of schizophrenia spectrum disorders: a meta-analysis

BACKGROUND

Despite the effectiveness of anti-psychotic pharmacotherapy, residual hallucinations and delusions do not completely resolve in some medicated patients. Additional cognitive behavioral therapy (CBT) seems to improve the management of positive symptoms. Despite promising results, the efficacy of CBT is still unclear. The present study addresses this issue taking into account a number of newly published controlled studies.

METHOD

Fourteen studies including 1484 patients, published between 1990 and 2004 were identified and a meta-analysis of their results performed.

RESULTS

Compared to other adjunctive measures, CBT showed significant reduction in positive symptoms and there was a higher benefit of CBT for patients suffering an acute psychotic episode versus the chronic condition (effect size of 0.57 vs. 0.27).

DISCUSSION

CBT is a promising adjunctive treatment for positive symptoms in schizophrenia spectrum disorders. However, a number of potentially modifying variables have not yet been examined, such as therapeutic alliance and neuropsychological deficits.

Cognitive behaviour therapy for schizophrenia -- a review of development, evidence and implementation

BACKGROUND

Schizophrenia and other psychotic disorders were once thought to be impervious to psychological treatments; however, there is accumulating evidence that cognitive behaviour therapy (CBT) can result in significant clinical benefit to these patients.

AIM

This paper aims to describe the development and adaptation of CBT in the treatment of schizophrenia, to summarise the evidence to support CBT as a viable treatment and to outline some of the issues in 'rolling out' this treatment into normal clinical settings.

RESULTS

A number of clinical models of CBT have been developed and these typically consist of a variety of clinical methods with different models providing differing emphasis. Twenty controlled trials of CBT in schizophrenia in which 739 patients were included are reviewed. These studies have a mean effect size for CBT of 0.37 (SD 0.39). There is consistent evidence that CBT reduces persistent positive symptoms in chronic patients and may have modest effects in speeding recovery in acutely ill patients. The evidence of CBT reducing relapse rates is equivocal, although targeted early intervention is promising. The available evidence suggests that CBT can be utilised effectively in routine clinical practice. However, the dissemination of novel psychological treatments into widespread clinical practice is not without difficulty, and issues pertaining to the 'roll-out' of CBT are discussed.

CONCLUSIONS

CBT as an adjunct treatment shows considerable promise for the future treatment of schizophrenia.

Affective processes in the onset and persistence of psychosis

OBJECTIVES

Cognitive models suggest that beliefs and appraisal processes are crucially important in the onset and persistence of psychosis. This study investigated whether (i) neuroticism increases the risk for development of psychotic symptoms, and (ii) a delusional interpretation and/or a depressed response to hallucinatory experiences predicts the onset of psychotic disorder.

METHOD

A general population sample with no lifetime evidence of any psychotic disorder was interviewed with the Composite International Diagnostic Interview Schedule (CIDI) at baseline and 1 and 3 years later. At year 3, individuals with CIDI evidence of psychotic symptoms were interviewed by clinicians to identify onset of psychotic disorder.

RESULTS

Baseline level of neuroticism increases the risk for incident psychotic symptoms. Given the presence of hallucinatory experiences at baseline, the increase in risk of having the psychosis outcome was much higher in the group with delusional ideation or depressed mood at year 1 than in those without delusional ideation or depressed mood.

CONCLUSION

A cognitive style characterised by a tendency to worry increases the risk for newly developed psychotic symptoms. Individuals who report hallucinatory experiences and react to these with a delusional interpretation and/or negative emotional states have an increased risk for developing clinical psychosis.

The psychology of persecutory ideation I: a questionnaire survey

Paranoia is a complex phenomenon that is likely to arise from a number of factors. In a recent cognitive model of persecutory delusions, three key factors are highlighted: anomalous experiences, emotion, and reasoning. In the first of two linked studies, we report a questionnaire survey of nonclinical paranoia designed to assess the theoretical model. A nonclinical population (N = 327) completed measures of paranoia, anomalous experiences (hallucinatory predisposition, perceptual anomalies), emotion (depression, anxiety, self-focus, stress, interpersonal sensitivity), and reasoning (need for closure). Paranoia was best explained by separation anxiety, depression, fragile inner self, hallucinatory experiences, discomfort with ambiguity, stress, self-focus, perceptual anomalies, and anxiety. The findings are consistent with the central predictions within the model of paranoia.

Cognitive therapy for persistent psychosis in schizophrenia: a case-controlled clinical trial

The results of an open label controlled outcome study are presented, comparing Cognitive Therapy with a treatment-as-usual group. Independent raters assessed symptom severity and psychosocial functioning at baseline, and again at 6 months. Improvements were found for Cognitive Behavior Therapy (CBT) patients in Clinical Global Impression for Improvement (CGI; p<0.03), Global Psychosocial Functioning (p<0.001), the Global Assessment Scale (GAS) ratings (p<0.013), overall symptoms (p<0.049), and delusions (p<0.029). A trend toward significance was found for reductions in negative symptoms (p<0.06). The results suggest the potential utility of cognitive therapy as a companion therapy for schizophrenia in the United States. Limitations of the study include small sample sizes, lack of randomized assignment, and rater nonblindedness to treatment condition.

A pilot study of functional Cognitive Behavioral Therapy (fCBT) for schizophrenia

BACKGROUND

The feasibility and preliminary efficacy of a novel cognitive behavioral treatment for decreasing psychotic symptoms and improving social functioning was evaluated in a pilot study. This represents the first treatment outcome study of CBT for psychosis with a manualized, active comparison condition.

METHODS

Thirty outpatients with schizophrenia or schizoaffective disorder, depressed type with residual psychotic symptoms were randomly assigned to either 16 weekly sessions of functional cognitive behavioral therapy (fCBT) or psychoeducation (PE) with assessments conducted at baseline and post-treatment by blind evaluators.

RESULTS

Attrition was only 7% and did not differ between fCBT and PE, indicating good tolerability of both treatments. For this sample with persistent symptoms, between groups effects were not significantly different, but within group effect sizes indicated greater treatment benefit for fCBT on positive symptoms, particularly for the PSYRATS voices subscale.

CONCLUSION

The results suggest that fCBT is well tolerated and holds promise for reducing persistent positive symptoms.

Functional cognitive-behavioural therapy: a brief, individual treatment for functional impairments resulting from psychotic symptoms in schizophrenia

This paper describes a novel cognitive-behavioural approach to treating psychotic symptoms--functional cognitive-behavioural therapy (FCBT)--which was developed with the primary aim of remediating social functioning deficits in patients with residual psychotic symptoms. In FCBT, symptom-focused cognitive-behavioural therapy (CBT) interventions are delivered in the context of working on functional goals: a premise of FCBT is that the therapeutic alliance and patient motivation are enhanced by linking interventions to life goals. The paper outlines the rationale for expanding existing approaches to target social functioning impairment and uses case illustrations to exemplify particular phases of treatment as well as specific CBT interventions. Results from a pilot study of FCBT are summarized, together with suggestions for new research directions.