Why do bad things happen to me? Attributional style, depressed mood, and persecutory delusions in patients with schizophrenia

Parents' illness representations of their child with anorexia nervosa: A systematic review of qualitative studies using the common-sense model

OBJECTIVE

Research indicates that parents experience distress while caring for a child with anorexia nervosa. Applying the Common Sense Model of Self-Regulation (CSM), a framework to describe responses to illness may help to understand the antecedents of parental distress, which could inform how to support parents in treatment. The aim of this systematic review was to synthesize outcomes from qualitative research in relation to parents' experiences of caring for a child with anorexia nervosa using the CSM.

METHOD

Systematic search of four electronic databases (psychINFO, MEDLINE, EMBASE, ProQuest Dissertation, and Theses Database) alongside a two-way screening process was used to identify eligible studies. Qualitative themes were synthesized using a "best fit" framework analysis and reported according to CSM dimensions of cognitive and emotional illness representations.

RESULTS

A total of 32 studies published between 1970 and 2023 were eligible for inclusion for review. Parents perceived their child's anorexia nervosa as a major health threat observable by illness representations that anorexia nervosa was uncontrollable, incomprehensible, chronic, and associated with negative consequences. The themes also suggested parents take responsibility for causing anorexia nervosa. These illness representations were linked with emotional representations of fear, anxiety, shame, guilt, loneliness, and depression.

CONCLUSIONS

The findings provide evidence of the utility of using the CSM to understand the antecedents of parents' distress and negative impacts of caring for a child with anorexia nervosa. Recommendations for future research and clinical practice are discussed emphasizing the need to understand parents' perceptions of their child's illness to putatively maximize treatment benefits for families.

PUBLIC SIGNIFICANCE

This review emphasizes the salience of understanding parents distress while caring for a child with anorexia nervosa. The findings present opportunities to best support parents in treatment, with a focus on addressing their cognitive and emotional representations of their child's illness. A multicomponent treatment regimen may be required to support parents if they present with illness representations that negatively affect their well-being and ability to cope with distress.

[Recent developments in the modeling and psychological management of persecutory ideation]

Persecutory ideas are a major clinical problem and are associated with impaired functioning, reduced compliance with medication and increased risk of hospitalization. Persecutory ideation is defined as the false conviction that others are threatening or conspiring against one. Although persecutory delusions are mainly described and experienced in schizophrenia spectrum disorders, they also occur in other neurological and psychiatric diagnoses including Alzheimer disease, epilepsy, depression, mania, dementia and post-traumatic stress disorder. Moreover, epidemiological data from general and clinical populations indicated that paranoid beliefs occur on a hierarchy of severity and are present to a lesser degree in the general population, with paranoid delusions representing the severe end of a continuum. In this review we focus on the important advances following a decade of research from psychological sciences, and more particularly the work of Daniel Freeman and Philippa Garety in England. Their work has demonstrated that a range of causal factors are involved in the development and maintenance of delusions beyond the traditional cognitive and behavioural models. Indeed, there is now well-validated evidence that sleep disturbances, worry proneness, reasoning biases, such as failure to consider alternative explanations or belief confirmation bias, abnormal experiences such as hallucinations, negative self-beliefs, and safety behaviours, are central factors that contribute to the paranoid phenomenon. In this review, we describe each of these causal factors in detail as well as the clinical interventions developed by Freeman and his collaborators, including the integrative and modular "Feeling Safe" intervention. Broadly speaking, the aim of this psychological intervention is for patients to relearn safety by exposing them to situations they consider as potentially dangerous after reduction of the influence of the maintenance factors described above. A recent publication showed that the Feeling Safe program led to recovery in persecutory delusions for 50% of patients having poor response to antipsychotic medication, making the intervention as the most effective psychological treatment for persecutory delusions. Finally, we will critically discuss the efficacy data from the numerous clinical studies validating its effectiveness. Prospects for the implementation of the Feeling Safe program in France also is discussed.

Cognitive biases as an adaptive strategy in autism and schizophrenia spectrum: the compensation perspective on neurodiversity

This article presents a novel theoretical perspective on the role of cognitive biases within the autism and schizophrenia spectrum by integrating the evolutionary and computational approaches. Against the background of neurodiversity, cognitive biases are presented as primary adaptive strategies, while the compensation of their shortcomings is a potential cognitive advantage. The article delineates how certain subtypes of autism represent a unique cognitive strategy to manage cognitive biases at the expense of rapid and frugal heuristics. In contrast, certain subtypes of schizophrenia emerge as distinctive cognitive strategies devised to navigate social interactions, albeit with a propensity for overdetecting intentional behaviors. In conclusion, the paper emphasizes that while extreme manifestations might appear non-functional, they are merely endpoints of a broader, primarily functional spectrum of cognitive strategies. The central argument hinges on the premise that cognitive biases in both autism and schizophrenia spectrums serve as compensatory mechanisms tailored for specific ecological niches.

Reading Literary Fiction Is Associated With a More Complex Worldview

What are the effects of reading fiction? We propose that literary fiction alters views of the world through its presentation of difference-different minds, different contexts, and different situations-grounding a belief that the social world is complex. Across four studies, two nationally representative and one preregistered (total n = 5,176), we find that the reading of literary fiction in early life is associated with a more complex worldview in Americans: increased attributional complexity, increased psychological richness, decreased belief that contemporary inequalities are legitimate, and decreased belief that people are essentially only one way. By contrast, early-life reading of narrative fiction that presents more standardized plots and characters, such as romance novels, predict holding a less complex worldview.

Verschwörungstheorien und paranoider Wahn: Lassen sich Aspekte kognitionspsychologischer Modelle zu Entstehung und Aufrechterhaltung von paranoiden Wahnüberzeugungen auf Verschwörungstheorien übertragen?

Der vorliegende narrative Übersichtsartikel stellt zunächst verschiedene Definitionen von Verschwörungstheorien und Verschwörungsmentalität vor und präsentiert Studien zu Zusammenhängen zwischen Persönlichkeitseigenschaften, Symptomen psychischer Störungen und Verschwörungstheorien. Anschließend werden die Kontinuumshypothese des Wahns sowie neuere Konzeptualisierungen von allgemeinem und paranoiden Wahn diskutiert, des Weiteren werden typische kognitionspsychologische Modelle präsentiert, die die Entstehung und Aufrechterhaltung von Wahnüberzeugungen durch eine Interaktion von biologischen Vulnerabilitätsfaktoren, psychologischen Faktoren und sozialen Faktoren erklären. In diesen Modellen mediieren sowohl kognitive Verarbeitungsstile („cognitive biases“) als auch emotionale Prozesse die Entstehung und Aufrechterhaltung von Wahn, beispielsweise die Tendenz, voreilige Schlussfolgerungen zu treffen („jumping to conclusions bias“), sowie externale Kontrollüberzeugungen und ein externalisierender personalisierender Kausalattributionsstil. Anschließend wird diskutiert, ob Menschen, die Verschwörungstheorien zugeneigt sind, ebenfalls ähnliche kognitive Verarbeitungsstile aufweisen, die auch bei Personen zu finden sind, die paranoiden Wahnüberzeugungen zustimmen und unter psychotischen Störungen leiden. Parallelen bestehen zwischen beiden Personengruppen beispielsweise im Hinblick auf eine Neigung zu externalen Kontrollüberzeugungen und einen external personalisierenden Kausalattributionsstil. Auch bestehen Ähnlichkeiten in der Neigung, voreilige Schlussfolgerungen zu treffen. Fragen nach Gemeinsamkeiten und Unterschieden zwischen beiden Phänomenen sollten in weiteren präregistrierten experimentellen Studien quer- sowie längsschnittlich untersucht werden. Möglicherweise könnten moderne niedrigschwellige Interventionsmethoden der kognitiven Verhaltenstherapie von Psychosen (CBTp) in die Beratung oder Prävention von Verschwörungstheorien implementiert werden.

The profile of unusual beliefs associated with metacognitive thinking and attributional styles

Cognitive interpretations of daily events may differ in people from the general population who hold unusual beliefs. It is also important to understand whether different belief profiles exist to appreciate which patterns of beliefs are less psychologically healthy. Cluster analysis was used to form unusual belief profiles in a general population sample (n = 578; M_age = 22 years, SD = 6.98; 80% female) across paranoid, paranormal, and magical ideation beliefs, and we assessed whether they differed in attribution style and metacognitive beliefs about worry. Four clusters were formed: low on all measures (low all); high on all measures (high all); comparably higher on paranormal beliefs (paranormal group); and comparably higher on paranoid beliefs (paranoid group). For total Metacognitions Questionnaire‐30, the high all and high paranoid clusters did not differ, and both clusters scored higher than the high paranormal group, who all scored higher than the low all cluster. For attributional styles (Attributional Styles Questionnaire), lower scores on internal positive attribution were found for the high all and high paranoid clusters compared to the low all and high paranormal clusters. The high paranormal cluster had higher scores than the high paranoid cluster on self‐serving bias. Differences in attributional style appeared to be driven by mental health diagnosis. Our results suggest different profiles of unusual beliefs are detectable in the general population that differ in their metacognitive beliefs and perceived causation of events in their environment. Future studies investigating delusional proneness need to consider multiple unusual beliefs as well as assessing mood state and distress.

The Type of Information People with Schizophrenia Use in Ambiguous Social Situations

BACKGROUND AND OBJECTIVES

Rather than focusing on the extensively studied social perception and recognition impairments in people with schizophrenia, this study focuses on the type of social information considered relevant by people with schizophrenia, and how they use it to arrive at conclusions about social situations.

METHODS

Participants included 50 outpatients with schizophrenia from the Hospital del Salvador at Valparaíso, Chile, and 50 healthy comparators matched by age and gender. Subjects completed the Social Information Preference Test (SIPT), which presents scenes depicting ambiguous social situations with faces, thoughts, and facts about the scene hidden from view. Participants were required to select a limited number of these items and then choose between possible interpretations of the scene (positive, neutral, or negative). Additionally, they are asked to provide a feeling of certainty in their answers, using a 7-point visual analogue scale.

RESULTS

People with schizophrenia, as well as controls had a strong preference for knowing the thoughts of the characters. Both groups were least likely to choose emotional expressions. Patients were significantly less likely to choose object/information than controls. Both groups showed a high certainty in their responses and no tendency to choose negative interpretations.

LIMITATIONS

compensated clinical status of the patients may have influenced the results.

CONCLUSIONS

The results of this study suggest that, despite difficulties perceiving clues about the mental state of others, people with schizophrenia use this information to make sense of social situations, and apparently, they do not have problems in understanding social interactions.

Problems in measuring the JTC-bias in patients with psychotic disorders with the fish task: a secondary analysis of a baseline assessment of a randomized controlled trial

BACKGROUND

The jumping to conclusions bias (JTC) is considered to be an important causal factor in theoretical models for the formation and maintenance of delusions. However, recent meta-analytic findings show a rather equivocal pattern of results regarding associations between JTC and delusions. Thus, the present study aims to investigate in a large sample whether the JTC-bias is more pronounced in patients with psychotic disorders in comparison to controls and whether the JTC bias is associated with a more severe delusional conviction, persecutory delusions, and positive symptoms in general.

METHODS

Patients with psychotic disorders (n = 300) enrolled in a therapy trial and healthy controls (n = 51) conducted a variant of the beads task (fish task) as a measure for the JTC-bias at the start of the trial. Further, clinical interviews were used to assess patients' delusional severity and delusional conviction.

RESULTS

There were no statistically significant differences between patients with psychotic disorders (with 53% displaying the JTC-bias) and controls (41%). Furthermore, there were no statistically significant correlations between JTC measures and persecutory delusions, delusional conviction, and positive symptoms.

CONCLUSIONS

We found no differences in JTC between patients with psychotic disorders and healthy controls, which is in part in line with meta-analytic findings using a wide range of JTC task variants. Interestingly, patients with psychotic disorders displayed JTC rates commonly found in the literature, while healthy control subjects showed an unexpectedly high level of JTC. The task variant we used in the present study (fish task) is discussed as a potential reason for our results, as it may induce a more deliberative reasoning style in controls as compared to the traditional beads task. Furthermore, possible implications for the measurement of the JTC-bias, in general, are discussed.

TRIAL REGISTRATION

ISRCTN29242879 ( isrctn.com ), date of registration: April 12th 2006, retrospectively registered.

A comprehensive meta-analysis of the self-serving bias in schizophrenia spectrum disorders compared to non-clinical subjects

We conducted a comprehensive meta-analysis to investigate the self-serving bias SSB in schizophrenia spectrum disorders (SSD) to examine its specificity for persecutory delusions, paranoia, and to explore sources of heterogeneity in previous findings. We included 56 studies with n = 2501 patients with SSD and n = 2601 non-clinical controls in the main random-effects model using Hedges' g. Data quality and risk of bias were assessed. Results showed that SSB was a function of the method of measurement, and the cultural background of the participants, thereby identifying important sources of heterogeneity in measuring SSB in patients with SSD. The SSD group was somewhat more prone to SSB (g = 0.17), especially, when in a state of active persecutory delusion (g = 0.32/0.57), when they scored high in paranoid ideation (r = 0.25), or tended to jump to conclusions (r = 0.43). High self-esteem in the SSD group was associated with high SSB (r = 0.34); depression with low SSB (r=-0.39).

The Type of Information People with Schizophrenia Use in Ambiguous Social Situations

BACKGROUND AND OBJECTIVES

Rather than focusing on the extensively studied social perception and recognition impairments in people with schizophrenia, this study focuses on the type of social information considered relevant by people with schizophrenia, and how they use it to arrive at conclusions about social situations.

METHODS

Participants included 50 outpatients with schizophrenia from the Hospital del Salvador at Valparaíso, Chile, and 50 healthy comparators matched by age and gender. Subjects completed the Social Information Preference Test (SIPT), which presents scenes depicting ambiguous social situations with faces, thoughts, and facts about the scene hidden from view. Participants were required to select a limited number of these items and then choose between possible interpretations of the scene (positive, neutral, or negative). Additionally, they are asked to provide a feeling of certainty in their answers, using a 7-point visual analogue scale.

RESULTS

People with schizophrenia, as well as controls had a strong preference for knowing the thoughts of the characters. Both groups were least likely to choose emotional expressions. Patients were significantly less likely to choose object/information than controls. Both groups showed a high certainty in their responses and no tendency to choose negative interpretations.

LIMITATIONS

compensated clinical status of the patients may have influenced the results.

CONCLUSIONS

The results of this study suggest that, despite difficulties perceiving clues about the mental state of others, people with schizophrenia use this information to make sense of social situations, and apparently, they do not have problems in understanding social interactions.

Considering the Microbiome in Stress-Related and Neurodevelopmental Trajectories to Schizophrenia

Early life adversity and prenatal stress are consistently associated with an increased risk for schizophrenia, although the exact pathogenic mechanisms linking the exposures with the disease remain elusive. Our previous view of the HPA stress axis as an elegant but simple negative feedback loop, orchestrating adaptation to stressors among the hypothalamus, pituitary, and adrenal glands, needs to be updated. Research in the last two decades shows that important bidirectional signaling between the HPA axis and intestinal mucosa modulates brain function and neurochemistry, including effects on glucocorticoid hormones and brain-derived neurotrophic factor (BDNF). The intestinal microbiome in earliest life, which is seeded by the vaginal microbiome during delivery, programs the development of the HPA axis in a critical developmental window, determining stress sensitivity and HPA function as well as immune system development. The crosstalk between the HPA and the Microbiome Gut Brain Axis (MGBA) is particularly high in the hippocampus, the most consistently disrupted neural region in persons with schizophrenia. Animal models suggest that the MGBA remains influential on behavior and physiology across developmental stages, including the perinatal window, early childhood, adolescence, and young adulthood. Understanding the role of the microbiome on critical risk related stressors may enhance or transform of understanding of the origins of schizophrenia and offer new approaches to increase resilience against stress effects for preventing and treating schizophrenia.

Fostering coping as a mechanism of symptom change in cognitive behavioural therapy for psychosis

INTRODUCTION

Cognitive behavioural therapy for psychosis (CBTp) has been repeatedly shown to ameliorate psychotic symptoms. However, so far we have little understanding of the mechanisms of change in CBTp. In this study, we tested whether improved cognitive and behavioural efforts to manage taxing external or internal demands (=coping) constitute a mechanism of change in CBTp.

METHODS

Using data from a published trial for a secondary analysis, we tested whether the continuous symptomatic improvement of patients (n = 57) who received up to 45 sessions of CBTp and completed weekly self-assessments of symptoms (suspiciousness, individualised positive and negative symptoms, and individualised symptoms of depression) was mediated by preceding improvement in self-assessed coping using multilevel analysis. A reverse model in which symptom improvement predicted improved coping was also tested.

RESULTS

Continuous improvement in suspiciousness, negative symptoms, and depression over the course of CBTp was preceded by improvement in coping. Improvement in suspiciousness or positive symptoms did not predict subsequent improvement in coping, whereas improvement in negative symptoms and depression predicted subsequent improvement in coping.

CONCLUSION

Coping constitutes a mechanism of change, albeit to a different extent for different symptom clusters. Further research needs to explore how best to utilise this mechanism and optimise its integration with other active ingredients of CBTp to maximise therapeutic gain.

Cerebellar-Cortical Connectivity Is Linked to Social Cognition Trans-Diagnostically

Background: Psychotic disorders are characterized by impairment in social cognitive processing, which is associated with poorer community functioning. However, the neural mechanisms of social impairment in psychosis remain unclear. Social impairment is a hallmark of other psychiatric illnesses as well, including autism spectrum disorders (ASD), and the nature and degree of social cognitive impairments across psychotic disorders and ASD are similar, suggesting that mechanisms that are known to underpin social impairments in ASD may also play a role in the impairments seen in psychosis. Specifically, in both humans and animal models of ASD, a cerebellar-parietal network has been identified that is directly related to social cognition and social functioning. In this study we examined social cognition and resting-state brain connectivity in people with psychosis and in neurotypical adults. We hypothesized that social cognition would be most strongly associated with cerebellar-parietal connectivity, even when using a whole-brain data driven approach. Methods: We examined associations between brain connectivity and social cognition in a trans-diagnostic sample of people with psychosis (n = 81) and neurotypical controls (n = 45). Social cognition was assessed using the social cognition domain score of the MATRICS Consensus Cognitive Battery. We used a multivariate pattern analysis to correlate social cognition with resting-state functional connectivity at the individual voxel level. Results: This approach identified a circuit between right cerebellar Crus I, II and left parietal cortex as the strongest correlate of social cognitive performance. This connectivity-cognition result was observed in both people with psychotic disorders and in neurotypical adults. Conclusions: Using a data-driven whole brain approach we identified a cerebellar-parietal circuit that was robustly associated with social cognitive ability, consistent with findings from people with ASD and animal models. These findings suggest that this circuit may be marker of social cognitive impairment trans-diagnostically and support cerebellar-parietal connectivity as a potential therapeutic target for enhancing social cognition.

What are the specificities of social cognition in schizophrenia? A cluster-analytic study comparing schizophrenia with the general population

While social cognition (SC) is widely recognized as being impaired in schizophrenia, little is known about the potential heterogeneity in individuals' functioning. Using a wide range of SC measures and a cluster-analytic approach, we compared SC profiles in the general population and in people with schizophrenia. A total of 131 healthy controls and 101 participants with schizophrenia were included. Groups were compared on sociodemographic, neurocognition, anxiety and depressive mood variables. Three profiles were identified in healthy controls: one with good SC abilities (Homogeneous SC group) and two with specific weaknesses in complex Facial Emotion Recognition (Low FER group) or Affective Theory of Mind (Low AToM group). However, these patterns were not found in participants with schizophrenia, who were characterized rather by levels of SC functioning (i.e., Low, Medium and High SC groups). Importantly, while the High SC group (47.9% of the sample) exhibited normal performances, the two others were underpinned by different pathological processes (i.e., alexithymia for Medium SC group or neurocognition dysfunctioning for Low SC group). These results have important implications for future research as well as for clinical practice regarding assessment methodology and therapeutic interventions.

The paranoia as defence model of persecutory delusions: a systematic review and meta-analysis

BACKGROUND

An influential psychological model of persecutory delusions proposed that they are caused by a bias towards holding others responsible for negative events (an externalising attributional bias), preventing the individual from becoming aware of underlying low self-esteem. An early version of the model predicted self-esteem would, therefore, be preserved in people with these delusions, but a later version suggested it would be unstable, and that there would be a discrepancy between explicit and implicit self-esteem, with the latter being lower. We did a comprehensive meta-analytical test of the key predictions of this model and assessed the quality of evidence.

METHODS

We searched PubMed from Jan 1, 1994, to July 31, 2018, and collated systematic reviews of the defensive model's predictions in relation to persecutory delusions. We also searched PsycINFO, MEDLINE, Embase, and Web of Science for articles published from Jan 1, 2012, to Sept 10, 2016. Cross-sectional data from case-control, longitudinal, or experimental studies that examined self-esteem or the externalising attributional bias in individuals diagnosed as having schizophrenia-spectrum disorder were eligible for meta-analyses of group differences if at least 50% of participants with psychosis also had current persecutory delusions. Uncontrolled and longitudinal studies were included in meta-analyses of correlations and self-esteem instability, respectively. Study and outcome quality were assessed with the Agency for Healthcare Research and Quality assessment tool, and a modified version of Grading of Recommendations Assessment, Development and Evaluation, respectively. The study protocol is registered with PROSPERO, number CRD42016032782.

FINDINGS

We screened 3053 records, examined 104 full-text reports, and included 64 eligible studies. Consistent with the predictions of both versions of the model, paranoia severity in psychosis was positively correlated with the degree of externalising attributional bias (21 studies involving 1128 individuals; r=0·18, 95% CI 0·08 to 0·27, with moderate quality evidence). People with persecutory delusions also had a greater externalising attributional bias than non-clinical individuals (27 studies involving 1442 individuals; g=0·48, 95% CI 0·23 to 0·73) and depressed individuals (ten studies involving 421 individuals; g=1·06, 0·48 to 1·63), and people with psychosis without persecutory delusions (11 studies involving 480 individuals; g=0·40, 0·12 to 0·68), all based on moderate quality evidence. Contrary to the predictions in the early version of the model, paranoia severity in psychosis was negatively correlated with explicit self-esteem (23 studies involving 1866 individuals; r=-0·26, 95% CI -0·34 to -0·17, with high quality evidence). People with persecutory delusions also had lower explicit self-esteem than non-clinical individuals (22 studies involving 1256 individuals; g=-0·88, 95% CI -1·10 to -0·66, with high quality evidence) and explicit self-esteem similarly low to that in people with psychosis without persecutory delusions (11 studies involving 644 individuals; g=-0·26, -0·54 to 0·02, with moderate quality evidence). Consistent with the predictions in the later version of the model, self-esteem instability was positively correlated with paranoia severity in psychosis (four studies involving 508 individuals; r=0·23, 95% CI 0·11-0·34, with high quality evidence), and people with persecutory delusions had a greater discrepancy between their implicit and explicit self-esteem than depressed individuals (seven studies involving 398 individuals; g=0·61, 95% CI 0·37 to 0·85, with moderate quality evidence). They had higher explicit self-esteem than depressed individuals (13 studies involving 647 individuals; g=0·89, 95% CI 0·51 to 1·28, with moderate quality evidence), but similarly low implicit self-esteem (seven studies involving 398 individuals; g=-0·19, -0·45 to 0·07, with low quality evidence). In contrast to the later predictions, people with persecutory delusions did not have a greater self-esteem discrepancy than non-clinical individuals (ten studies involving 592 individuals; g=-0·17, 95% CI -0·45 to 0·12), although the evidence was very low quality. People with psychosis with or without persecutory delusions did not differ for implicit self-esteem (four studies involving 167 individuals; g=-0·24, 95% CI -0·77 to 0·30, with low quality evidence) or self-esteem discrepancies (four studies involving 165 individuals; g=0·17, -0·19 to 0·53, with moderate quality evidence).

INTERPRETATION

The predictions that self-esteem would be preserved in people with persecutory delusions in the early version of the paranoia as defence model and that implicit-explicit self-esteem discrepancy would be greater in people with persecutory delusions than in non-clinical individuals and people with psychosis without persecutory delusions in the later version of the model were not supported. By contrast, the later version correctly predicted that people with persecutory delusions have a greater self-esteem discrepancy than people with depression and a greater externalising attributional bias than all control groups, and that both this bias and self-esteem instability are associated with increased paranoia severity. Nevertheless, the reviewed data had limitations. Experimental studies, which might include interventionist-causal trials, are needed.

FUNDING

None.

Does CBT for Psychosis Have an Impact on Delusions by Improving Reasoning Biases and Negative Self-Schemas?

Abstract. Cognitive-behavioral therapy for psychosis (CBTp) builds on theoretical models that postulate reasoning biases and negative self-schemas to be involved in the formation and maintenance of delusions. However, it is unclear whether CBTp induces change in delusions by improving these proposed causal mechanisms. This study reports on a mediation analysis of a CBTp effectiveness trial in which delusions were a secondary outcome. Patients with psychosis were randomized to individualized CBTp (n = 36) or a waiting list condition (WL; n = 34). Reasoning biases (jumping to conclusions, theory of mind, attribution biases) and self-schemas (implicit and explicit self-esteem; self-schemas related to different domains) were assessed pre- and post-therapy/WL. The results reveal an intervention effect on two of four measures of delusions and on implicit self-esteem. Nevertheless, the intervention effect on delusions was not mediated by implicit self-esteem. Changes in explicit self-schemas and reasoning biases did also not mediate the intervention effects on delusions. More focused interventions may be required to produce change in reasoning and self-schemas that have the potential to carry over to delusions.

The Importance of Social Cognition in Improving Functional Outcomes in Schizophrenia

Social cognition has become recognized as an important driver of functional outcomes and overall recovery in patients with schizophrenia, mediating the relationship between neurocognition and social functioning. Since antipsychotic therapy targeting remission of clinical symptoms has been shown to have a limited impact on social cognition, there has been an increasing drive to develop therapeutic strategies to specifically improve social cognition in schizophrenia. We sought to review current evidence relating to social cognition in schizophrenia and its clinical implications, including interventions designed to target the core domains of social cognition (emotion processing, theory of mind, attributional bias, and social perception) as a means of improving functional outcomes and thereby increasing the likelihood of recovery. Relevant articles were identified by conducting a literature search in PubMed using the search terms "schizophrenia" AND "cognition" AND "social functioning," limited to Title/Abstract, over a time period of the past 10 years. Current evidence demonstrates that schizophrenia is associated with impairments in all four core domains of social cognition, during the pre-first-episode, first-episode, early, and chronic phases of the disease, and that such impairments are important determinants of functional outcome. Interventions targeting the four core domains of social cognition comprise psychosocial approaches (social cognition training programs) and pharmacological therapies. Social cognition training programs targeting multiple and specific core domains of social cognition have shown promise in improving social cognition skills, which, in some cases, has translated into improvements in functional outcomes. Use of some psychosocial interventions has additionally resulted in improvements in clinical symptoms and/or quality of life. Pharmacological therapies, including oxytocin and certain antipsychotics, have yielded more mixed results, due in part to the confounding impact of factors including variation in receptor genetics, bioavailability, pharmacokinetics, and drug-drug interactions, and inconsistencies between study designs and medication dosages. Additional research is required to advance our understanding of the role of social cognition in schizophrenia, and to further establish the utility of targeted interventions in this setting.

Impaired self-agency inferences in schizophrenia: The role of cognitive capacity and causal reasoning style

BACKGROUND

The sense of self-agency, i.e., experiencing oneself as the cause of one's own actions, is impaired in patients with schizophrenia. Normally, inferences of self-agency are enhanced when actual outcomes match with pre-activated outcome information, where this pre-activation can result from explicitly set goals (i.e., goal-based route) or implicitly primed outcome information (i.e., prime-based route). Previous research suggests that patients show specific impairments in the prime-based route, implicating that they do not rely on matches between implicitly available outcome information and actual action-outcomes when inferring self-agency. The question remains: Why? Here, we examine whether neurocognitive functioning and self-serving bias (SSB) may explain abnormalities in patients' agency inferences.

METHODS

Thirty-six patients and 36 healthy controls performed a commonly used agency inference task to measure goal- and prime-based self-agency inferences. Neurocognitive functioning was assessed with the Brief Assessment of Cognition in Schizophrenia (BACS) and the SSB was assessed with the Internal Personal and Situational Attributions Questionnaire.

RESULTS

Results showed a substantial smaller effect of primed outcome information on agency experiences in patients compared with healthy controls. Whereas patients and controls differed on BACS and marginally on SSB scores, these differences were not related to patients' impairments in prime-based agency inferences.

CONCLUSIONS

Patients showed impairments in prime-based agency inferences, thereby replicating previous studies. This finding could not be explained by cognitive dysfunction or SSB. Results are discussed in the context of the recent surge to understand and examine deficits in agency experiences in schizophrenia.

Schizophrenia dissection by five anxiety and depressive subtype comorbidities: Clinical implications and evolutionary perspective

Twenty patients with DSM5 schizophrenia were comprehensively and formally assessed by an experienced psychiatrist. All subjects were assessed for: positive and negative psychotic symptoms; social anxiety; panic anxiety; obsessive compulsive disorder, atypical depression; major depression; suicide risk; and global assessment of functioning. Different profiles of clinical presentation and symptom evolution emerged for patients with schizophrenia who had co-morbid depression (15%), OCD (15%), panic or limited symptom attacks (55%) and social anxiety (5%). At least eighty percent of the sample had one or more of these co-morbidities. Summing up, the data support our previous finding that panic is highly prevalent in Schizophrenia with Auditory Hallucinations (>73% here, versus 100% before), and panic was paroxysmally concurrent with voice onset. Moreover, characteristic clinical findings may help point clinicians to five specific co-morbidity psychosis subtypes. Moreover, co-morbidity dissection of psychotic diagnoses recalls and parallels the historical psychopharmacologic dissection of non-psychotic anxiety and depressive subtypes diagnoses. Larger studies should further test and explore these preliminary findings.

Randomized control trial to assess the efficacy of metacognitive training compared with a psycho-educational group in people with a recent-onset psychosis

BACKGROUND

Aims were to assess the efficacy of metacognitive training (MCT) in people with a recent onset of psychosis in terms of symptoms as a primary outcome and metacognitive variables as a secondary outcome.

METHOD

A multicenter, randomized, controlled clinical trial was performed. A total of 126 patients were randomized to an MCT or a psycho-educational intervention with cognitive-behavioral elements. The sample was composed of people with a recent onset of psychosis, recruited from nine public centers in Spain. The treatment consisted of eight weekly sessions for both groups. Patients were assessed at three time-points: baseline, post-treatment, and at 6 months follow-up. The evaluator was blinded to the condition of the patient. Symptoms were assessed with the PANSS and metacognition was assessed with a battery of questionnaires of cognitive biases and social cognition.

RESULTS

Both MCT and psycho-educational groups had improved symptoms post-treatment and at follow-up, with greater improvements in the MCT group. The MCT group was superior to the psycho-educational group on the Beck Cognitive Insight Scale (BCIS) total (p = 0.026) and self-certainty (p = 0.035) and dependence self-subscale of irrational beliefs, comparing baseline and post-treatment. Moreover, comparing baseline and follow-up, the MCT group was better than the psycho-educational group in self-reflectiveness on the BCIS (p = 0.047), total BCIS (p = 0.045), and intolerance to frustration (p = 0.014). Jumping to Conclusions (JTC) improved more in the MCT group than the psycho-educational group (p = 0.021). Regarding the comparison within each group, Theory of Mind (ToM), Personalizing Bias, and other subscales of irrational beliefs improved in the MCT group but not the psycho-educational group (p < 0.001-0.032).

CONCLUSIONS

MCT could be an effective psychological intervention for people with recent onset of psychosis in order to improve cognitive insight, JTC, and tolerance to frustration. It seems that MCT could be useful to improve symptoms, ToM, and personalizing bias.

The lonely road to paranoia. A path-analytic investigation of loneliness and paranoia

Loneliness and paranoia are related, but the mechanisms that link them to each other remain unclear. Systematic reviews on loneliness propose a social-cognitive model in which loneliness leads to negative evaluations of other persons and a lack of interpersonal trust. However, the data discussed in these reviews are based on healthy individuals. Building on this model, the present study investigated 1) whether negative interpersonal schemata mediate the association between loneliness and paranoia and 2) whether a low level of perceived social support and less frequent social contact are related to loneliness. Using a cross-sectional design, sixty-five participants with a diagnosis of schizophrenia were recruited online and completed questionnaire-based measures of loneliness, paranoia, negative interpersonal schemata, perceived social support and frequency of social contact. Data were analyzed taking a path-analytic approach. The association between loneliness and paranoia was significantly and fully mediated by negative schemata of others. Moreover, a low level of perceived social support was significantly associated with loneliness, whereas self-reported frequency of social contact was not. The present results highlight the potential role of interpersonal negative schemata in the formation and maintenance of paranoia and elucidate the crucial role of loneliness in the way individuals construe themselves within a social environment.

Towards a second-person neuropsychiatry

Psychiatric disorders can affect our ability to successfully and enjoyably interact with others. Conversely, having difficulties in social relations is known to increase the risk of developing a psychiatric disorder. In this article, the assumption that psychiatric disorders can be construed as disorders of social interaction is reviewed from a clinical point of view. Furthermore, it is argued that a psychiatrically motivated focus on the dynamics of social interaction may help to provide new perspectives for the field of social neuroscience. Such progress may be crucial to realize social neuroscience's translational potential and to advance the transdiagnostic investigation of the neurobiology of psychiatric disorders.

Effects of antipsychotics on insight in schizophrenia: results from independent samples of first-episode and acutely relapsed patients

We aimed to investigate whether antipsychotics differentially impact insight and whether these effects appear because of improvement in psychopathological manifestation in 132 first-episode schizophrenia patients and 201 acutely relapsed schizophrenic patients, who were followed up for 12 weeks. Olanzapine and risperidone were administered to first-episode schizophrenia patients, whereas acutely relapsed schizophrenic patients were treated with olanzapine, perazine and ziprasidone. The Positive And Negative Syndrome Scale (PANSS) was used to assess psychopathology. Insight was assessed using the G12 item of PANSS. Unadjusted mixed-model regression analysis indicated a significant improvement in the PANSS G12 item score in both groups. There were no significant differences between distinct treatment subgroups of patients in terms of improvement in the PANSS G12 item score. After adjustment for the trajectories of changes in symptom dimensions, a decrease in the PANSS G12 item score was because of an improvement in positive, negative and excitement symptoms. A decrease in the PANSS G12 item score was also related to an increase in the severity of depressive symptomatology. Our results indicate that antipsychotics exert similar effects on insight in acute psychosis. These effects are likely because of an improvement in psychopathological manifestation. The improvement in insight might be related to the development of depressive symptoms.

Dimensions of Delusions and Attribution Biases along the Continuum of Psychosis

This study compared delusional dimensions and attribution biases along the continuum of psychosis. Participants completed questionnaires on delusion-like beliefs and attributions. Although patients with first-episode psychosis (N = 70) endorsed fewer delusion-like beliefs than non-clinical individuals with psychotic-like experiences (N = 12), they scored highest on delusional conviction, distress and preoccupation, followed by non-clinical individuals with psychotic-like experiences, and then healthy controls (N = 642). Self-serving bias was found in patients and non-clinical individuals with psychotic-like experiences, but not in healthy controls. Personalizing bias for negative events was not significantly different across the three groups. When compared with healthy controls, non-clinical individuals with psychotic-like experiences had an exaggerated self-serving bias, but were not more marked in personalizing bias. Self-serving bias and personalizing bias were both associated with delusional dimensions. However, the association between self-serving bias and number of delusion-like beliefs was stronger among patients than non-clinical participants. Future research could investigate the extent to which self-serving bias, in combination with an appraisal of delusional ideation as convincing, distress, and preoccupying, contributes to the development of clinical delusions.

Stress is a bad advisor. Stress primes poor decision making in deluded psychotic patients

Stress is implicated in the onset of psychosis but the complex links between stress and psychotic breakdown are yet poorly understood. For the present study, we examined whether two prominent cognitive biases in psychosis, jumping to conclusions and distorted attribution, in conjunction with neuropsychological deficits play a role in this process. Thirty participants with schizophrenia and acute delusional symptoms were compared with 29 healthy controls across three conditions involving a noise stressor, a social stressor or no stressor. Under each condition participants had to perform parallel versions of cognitive bias tasks and neuropsychological tests including a probabilistic reasoning task (jumping to conclusions), the revised Internal, Personal and Situational Attributions Questionnaire (IPSAQ-R; attributional style), and the Corsi block-tapping task (nonverbal memory). Stress, particularly noise, aggravated performance differences of patients relative to controls on memory. Participants with psychosis demonstrated an escalated jumping to conclusion bias under stress. At a medium effect size, patients made more monocausal attributions, which increased under social stress. The present study is partially in line with prior studies. It suggests that stress negatively affects cognition in psychosis more than in controls, which is presumably insufficiently realized by patients and thus not held in check by greater response hesitance. Raising patients' awareness about these response tendencies and encouraging them to be more cautious in their judgments under conditions of increased stress may prove beneficial for improving positive symptoms.

Brain activation during self- and other-reflection in bipolar disorder with a history of psychosis: Comparison to schizophrenia

Objectives

Reflecting on the self and on others activates specific brain areas and contributes to metacognition and social cognition. The aim of the current study is to investigate brain activation during self- and other-reflection in patients with bipolar disorder (BD). In addition, we examined whether potential abnormal brain activation in BD patients could distinguish BD from patients with schizophrenia (SZ).

Methods

During functional magnetic resonance imaging (fMRI), 17 BD patients, 17 SZ patients and 21 healthy controls (HCs) performed a self-reflection task. The task consisted of sentences divided into three conditions: self-reflection, other-reflection and semantic control.

Results

BD patients showed less activation in the posterior cingulate cortex (PCC) extending to the precuneus during other-reflection compared to HCs (p = 0.028 FWE corrected on cluster-level within the regions of interest). In SZ patients, the level of activation in this area was in between BD patients and HCs, with no significant differences between patients with SZ and BD. There were no group differences in brain activation during self-reflection. Moreover, there was a positive correlation between the PCC/precuneus activation during other-reflection and cognitive insight in SZ patients, but not in BD patients.

Conclusions

BD patients showed less activation in the PCC/precuneus during other-reflection. This may support an account of impaired integration of emotion and memory (evaluation of past and current other-related information) in BD patients. Correlation differences of the PCC/precuneus activation with the cognitive insight in patients with BD and SZ might reflect an important difference between these disorders, which may help to further explore potentially distinguishing markers.

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We investigated self-reflection and other-reflection in bipolar disorder.

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Bipolar had less PCC/precuneus activation during other-reflection than controls.

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PCC/precuneus activation was unrelated to cognitive insight in bipolar patients.

Is good insight associated with depression among patients with schizophrenia? Systematic review and meta-analysis

Among patients with schizophrenia, better insight may be associated with depression, but the findings on this issue are mixed. We examined the association between insight and depression in schizophrenia by conducting a systematic review and meta-analysis. The meta-analysis was based on 59 correlational studies and showed that global clinical insight was associated weakly, but significantly with depression (effect size r=0.14), as were the insight into the mental disorder (r=0.14), insight into symptoms (r=0.14), and symptoms' attributions (r=0.17). Conversely, neither insight into the social consequences of the disorder nor into the need for treatment was associated with symptoms of depression. Better cognitive insight was significantly associated with higher levels of depression. The exploratory meta-regression showed that methodological factors (e.g. the instrument used to assess depression and the phase of the illness) can significantly influence the magnitude of the association between insight and depression. Moreover, results from longitudinal studies suggest that the relation between insight and depression might be stronger than what is observed at the cross-sectional level. Finally, internalized stigma, illness perception, recovery attitudes, ruminative style, and premorbid adjustment seem to be relevant moderators and/or mediators of the association between insight and depression. In conclusion, literature indicates that among patients with schizophrenia, better insight is associated with higher levels of depressive symptoms. Thus, interventions aimed at promoting patients' insight should take into account the clinical implications of these findings.

Advances in understanding and treating persecutory delusions: a review

PURPOSE

Persecutory delusions are a central psychotic experience, at the severe end of a paranoia spectrum in the general population. The aim of the review is to provide an introduction to the understanding of persecutory delusions, highlight key putative causal factors that have the potential to be translated into efficacious treatment, and indicate future research directions.

METHODS

A narrative literature review was undertaken to highlight the main recent areas of empirical study concerning non-clinical and clinical paranoia.

RESULTS

Six main proximal causal factors are identified: a worry thinking style, negative beliefs about the self, interpersonal sensitivity, sleep disturbance, anomalous internal experience, and reasoning biases. Each has plausible mechanistic links to the occurrence of paranoia. These causal factors may be influenced by a number of social circumstances, including adverse events, illicit drug use, and urban environments.

CONCLUSIONS

There have been numerous replicated empirical findings leading to a significant advance in the understanding of persecutory delusions, now beginning to be translated into cognitive treatments. The first trials specifically focussed on patients who have persecutory delusions in the context of psychotic diagnoses are occurring. Initial evidence of efficacy is very promising.