Shame triggers paranoid symptoms in adolescents with elevated psychosis proneness

Psychosis ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 331-341
Author(s):  
Timo Hennig
Keyword(s):  
Psychosis Proneness ◽  
Paranoid Symptoms

Dark and Peculiar

2019 ◽  
Vol 40 (2) ◽  
pp. 92-103 ◽  
Author(s):  
Janko Međedović ◽  
Goran Knežević
Keyword(s):  
Undergraduate Students ◽  
Study Design ◽  
Personal Characteristics ◽  
Emotional Reaction ◽  
Current Understanding ◽  
Male Students ◽  
Psychosis Proneness ◽  
Negative Emotional Reaction ◽  
Mind Set ◽  
Psychopathic Tendencies

Abstract. Earlier research suggested that militant extremists could have certain aspects of psychopathic and psychotic characteristics. Relying on these studies, we investigated whether the Militant Extremist Mind-Set (MEM) could be explained by psychopathy, sadism, and Disintegration (psychosis proneness), as subclinical manifestations of amoral, antisocial, and psychotic-like traits. In Study 1 (306 undergraduate students), it was shown that sadistic and psychopathic tendencies were related to Proviolence (advocating violence as a means for achieving a goal); psychopathic and disintegrative tendencies were associated to the Vile World (belief in a world as a corrupted and vile place), while Disintegration was the best predictor of Divine Power (relying on supernatural forces as a rationale for extremist acts). In Study 2 (147 male convicts), these relations were largely replicated and broadened by including implicit emotional associations to violence in the study design. Thus, while Proviolence was found to be related to a weakened negative emotional reaction to violent pictures, Vile World was found to be associated with stronger negative emotions as a response to violence. Furthermore, Proviolence was the only MEM factor clearly differentiating the sample of convicts from male students who participated in Study 1. Results help extend current understanding about personal characteristics related to militant extremism.

Toward a Neural Model of the Openness-Psychoticism Dimension: Functional Connectivity in the Default and Frontoparietal Control Networks

2019 ◽  
Author(s):  
Scott D. Blain ◽  
Rachael Grazioplene ◽  
Yizhou Ma ◽  
Colin G. DeYoung
Keyword(s):  
Functional Connectivity ◽  
Structural Equation ◽  
Psychotic Disorders ◽  
Neural Model ◽  
Equation Modeling ◽  
Control Networks ◽  
Psychosis Proneness ◽  
Human Connectome Project ◽  
Intrinsic Connectivity Networks ◽  
Personality Psychopathology

Psychosis proneness has been linked to heightened Openness to Experience and to cognitive deficits. Openness and psychotic disorders are associated with the default and frontoparietal networks, and the latter network is also robustly associated with intelligence. We tested the hypothesis that functional connectivity of the default and frontoparietal networks is a neural correlate of the openness-psychoticism dimension. Participants in the Human Connectome Project (N = 1003) completed measures of psychoticism, openness, and intelligence. Resting state functional magnetic resonance imaging was used to identify intrinsic connectivity networks. Structural equation modeling revealed relations among personality, intelligence, and network coherence. Psychoticism, openness, and especially their shared variance, were related positively to default network coherence and negatively to frontoparietal coherence. These associations remained after controlling for intelligence. Intelligence was positively related to frontoparietal coherence. Research suggests psychoticism and openness are linked in part through their association with connectivity in networks involving experiential simulation and cognitive control. We propose a model of psychosis risk that highlights roles of the default and frontoparietal networks. Findings echo research on functional connectivity in psychosis patients, suggesting shared mechanisms across the personality-psychopathology continuum.

scholarly journals COMT-by-Sex Interaction Effect on Psychosis Proneness

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Marta de Castro-Catala ◽  
Neus Barrantes-Vidal ◽  
Tamara Sheinbaum ◽  
Artal Moreno-Fortuny ◽  
Thomas R. Kwapil ◽  
...  
Keyword(s):  
Personality Traits ◽  
Susceptibility Gene ◽  
Psychotic Experiences ◽  
Comt Genotype ◽  
Comt Val158met ◽  
Negative Dimension ◽  
Psychosis Proneness ◽  
Specific Effects ◽  
The Impact ◽  
Male Subjects

Schizotypy phenotypes in the general population share etiopathogenic mechanisms and risk factors with schizophrenia, supporting the notion of psychosis as a continuum ranging from nonclinical to clinical deviance. Catechol-O-methyltransferase (COMT) is a candidate susceptibility gene for schizophrenia that is involved in the regulation of dopamine in the prefrontal cortex. Several recent studies have reported a sex difference in the impact of COMT genotype on psychiatric and cognitive phenotypes and personality traits. The present study investigated the association of COMT Val158Met (rs4680) with psychometric positive and negative schizotypy and psychotic experiences in a sample of 808 nonclinical young adults. The main finding was that sex moderates the association of COMT genotype with the negative dimension of both schizotypy and psychotic experiences. Male subjects carrying the Val allele tended to score higher on the negative dimension of both trait and symptom-like measures. The results from the present study are consistent with recent work suggesting an association between negative schizotypy and diminished prefrontal dopamine availability. They support the idea that a biological differentiation underlies the positive and negative schizotypy dimensions. Additionally, these findings contribute to the growing literature on sex-specific effects of COMT on the predisposition to psychiatric disorders and personality traits.

Paranoid Symptoms Associated with Triazolam

1985 ◽  
Vol 30 (6) ◽  
pp. 462-463 ◽  
Author(s):  
B. Schogt ◽  
D. Conn
Keyword(s):  
Paranoid Symptoms

scholarly journals A Study of HLA-Linked Genes in a Monosymptomatic Psychotic Disorder in an Indian Bengali Population

2005 ◽  
Vol 50 (5) ◽  
pp. 269-274 ◽  
Author(s):  
Monojit Debnath ◽  
Sujit K Das ◽  
Nirmal K Bera ◽  
Chitta R Nayak ◽  
Tapas K Chaudhuri
Keyword(s):  
Human Leukocyte ◽  
Delusional Disorder ◽  
Control Group ◽  
Typing Method ◽  
Hla Genes ◽  
Healthy Donors ◽  
Serological Typing ◽  
Molecular Typing Method ◽  
Paranoid Symptoms ◽  
Nested Case Control

Objective: The etiology of delusional disorder is imperfectly understood. Involvement of biological factors has long been suspected. We examined the incidence of class I human leukocyte antigens (HLAs) in patients with delusional disorder to understand the role of HLA genes and explore a possible immunogenetic etiology for delusional disorder. Methods: We used a nested case–control study design. Psychiatric reference data were available for 27 500 patients registered between 1998 and 2003. Initially, we enrolled 150 patients with delusional disorder from the India-born Bengali population, using DSM-IV diagnostic criteria. After longitudinal follow-up, 80 patients were found to have only delusional disorder, while the remaining 70 patients represented different illnesses with paranoid symptoms and were excluded. We performed serological typing on all 150 patients and applied the polymerase chain reaction–based high-resolution molecular typing method to the 80 patients with delusional disorder. Eighty healthy donors of the same ethnic background, matched for age, sex, and other socioeconomic variables, formed the control group. Results: Some of the HLA alleles were associated with delusional disorder, and the gene HLA-A*03 was found to be significantly more frequent. This gene may influence patients' susceptibility to delusional disorder. Conclusion: The study reveals important associations between HLA genes and delusional disorder. This preliminary observation may help our understanding of this disorder's genetic basis.

scholarly journals Dopamine D1 receptor availability is not associated with delusional ideation measures of psychosis proneness

2018 ◽  
Author(s):  
Granville James Matheson ◽  
Pontus Plavén-Sigray ◽  
Anaïs Louzolo ◽  
Jacqueline Borg ◽  
Lars Farde ◽  
...  
Keyword(s):  
Clinical Studies ◽  
Dopamine D1 Receptor ◽  
D1 Receptor ◽  
Psychotic Symptoms ◽  
Antipsychotic Treatment ◽  
Exact Nature ◽  
Healthy Controls ◽  
Psychosis Proneness ◽  
Delusional Ideation ◽  
Increased Risk

AbstractThe dopamine D1 receptor (D1R) is thought to play a role in psychosis and schizophrenia, however the exact nature of this involvement is not clear. Positron emission tomography studies comparing D1R between patients and control subjects have produced inconsistent results. An important confounding factor in most clinical studies is previous exposure to antipsychotic treatment, which is thought to influence the density of D1R. To circumvent some of the limitations of clinical studies, an alternative approach for studying the relationship between D1R and psychosis is to examine individuals at increased risk for psychotic disorders, or variation in subclinical psychotic symptoms such as delusional ideation within the general population, referred to as psychosis proneness traits. In this study, we investigated whether D1R availability is associated with delusional ideation in healthy controls using data from 76 individuals measured with PET using [11C]SCH23390 and 217 individuals who completed delusional ideation questionnaires, belonging to three different study cohorts. We first performed exploratory, hypothesis-generating, analyses by creating and evaluating a new measure of delusional ideation (n=132 and n=27), which was then found to show a negative association with D1R availability (n=24). Next, we performed confirmatory analyses using Bayesian statistical modelling, in which we first attempted to replicate this result (n=20), and then evaluated the association of Peters Delusion Inventory scores with D1R availability in two independent cohorts (n=41 and 20). Collectively, we found strong evidence that there is little to no linear association between delusional ideation and D1R availability in healthy controls. If differences in D1R can be confirmed in drug-naive schizophrenia patients compared to controls, further studies are needed to ascertain whether these changes occur at the onset of psychotic symptoms or if they are associated with specific behavioural or genetic aspects of psychosis proneness other than delusional ideation.

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