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Relevant bibliographies by topics / Psychosis proneness; Laterality; Personality

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Academic literature on the topic 'Psychosis proneness; Laterality; Personality'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Psychosis proneness; Laterality; Personality"

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Muntaner, Carles, Lluis Garcia-Sevilla, Alberto Fernandez, and Rafael Torrubia. "Personality dimensions, schizotypal and borderline personality traits and psychosis proneness." Personality and Individual Differences 9, no. 2 (1988): 257–68. http://dx.doi.org/10.1016/0191-8869(88)90087-6.

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Adami, Helene, Richard Kunkel, Marianne Moran, Shawn Cassady, Yawei Zhou, David Ross, and Gunvant Thaker. "Psychosis proneness scales in schizophrenia spectrum personality disorders." Schizophrenia Research 15, no. 1-2 (April 1995): 5. http://dx.doi.org/10.1016/0920-9964(95)95023-3.

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Laurent, A. "Psychosis proneness scales and DSM schizophrenia spectrum personality disorders." European Psychiatry 17 (May 2002): 166. http://dx.doi.org/10.1016/s0924-9338(02)80721-0.

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Kumari, Veena, Elena Antonova, and Mark A. Geyer. "Prepulse inhibition and “psychosis-proneness” in healthy individuals: An fMRI study." European Psychiatry 23, no. 4 (June 2008): 274–80. http://dx.doi.org/10.1016/j.eurpsy.2007.11.006.

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AbstractObjectivePrepulse inhibition (PPI) of the startle response provides an operational index of sensorimotor gating that is reliably demonstrable in both human and animal subjects. Patients with schizophrenia, first-degree relatives of patients with schizophrenia, patients with schizotypal personality disorder and healthy individuals scoring high on psychometric measures of psychosis-proneness display reduced PPI. This study examined associations between individual differences in “psychosis-proneness” and brain activity during a tactile prepulse inhibition paradigm previously found to reveal activation in controls and deficient activation in schizophrenia patients in the striatum, thalamus, insula, hippocampal, temporal, inferior frontal, and inferior parietal regions.MethodsFourteen right-handed healthy men underwent psychophysiological testing and functional magnetic resonance imaging (fMRI) during a 15-min tactile PPI paradigm involving the use of tactile stimuli as both the pulse (a 40-ms presentation of 30 psi air-puff) and the prepulse (a 20-ms presentation of 6 psi air-puff presented 30-ms or 120-ms before the pulse). Individual differences in “psychosis-proneness” were assessed with Psychoticism scale of the Eysenck Personality Questionnaire-Revised (EPQ-R).ResultsHigh psychosis-proneness was associated with lower PPI and reduced activity in the inferior frontal gyrus, insula extending to putamen and thalamus, parahippocampal gyrus, and inferior parietal and middle temporal regions. No regional activity correlated positively with psychosis-proneness.ConclusionsThe present observations extend the findings observed previously in people with schizophrenia to people with high psychosis-proneness, providing support to continuum theories of psychosis with implications for understanding trait-related neural deficits in schizophrenia.

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Hay, David A., Nicholas G. Martin, Debra Foley, Susan A. Treloar, Katherine M. Kirk, and Andrew C. Heath. "Phenotypic and Genetic Analyses of a Short Measure of Psychosis-proneness in a Large-scale Australian Twin Study." Twin Research 4, no. 1 (February 1, 2001): 30–40. http://dx.doi.org/10.1375/twin.4.1.30.

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AbstractPrevious genetic analyses of psychosis proneness have been limited by their small sample size. For the purposes of large-scale screening, a 12-item questionnaire was developed through a two-stage process of reduction from the full Chapman and Chapman scales. 3685 individuals (including 1438 complete twin pairs) aged 18–25 years and enrolled in the volunteer Australian Twin Registry returned a mail questionnaire which included this psychosis proneness scale and the Eysenck Personality Questionnaire. Despite the brevity of the questionnaire, item and factor analysis identified four unambiguous and essentially uncorrelated scales. There were (1) Perceptual Aberration – Magical Ideation; (2) Hypomania – Impulsivity/Nonconformity; (3) Social Anhedonia and (4) Physical Anhedonia. Model-fitting analyses showed additive genetic and specific environmental factors were sufficient for three of the four scales, with the Social Anhedonia scale requiring also a parameter for genetic dominance. There was no evidence for the previously hypothesised sex differences in the genetic determination of psychosis-proneness. The potential value of multivariate genetic analysis to examine the relationship between these four scales and dimensions of personality is discussed. The growing body of longitudinal evidence on psychosis-proneness suggests the value of incorporating this brief measure into developmental twin studies.

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Germine, L. T., and C. I. Hooker. "Face emotion recognition is related to individual differences in psychosis-proneness." Psychological Medicine 41, no. 5 (September 2, 2010): 937–47. http://dx.doi.org/10.1017/s0033291710001571.

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BackgroundDeficits in face emotion recognition (FER) in schizophrenia are well documented, and have been proposed as a potential intermediate phenotype for schizophrenia liability. However, research on the relationship between psychosis vulnerability and FER has mixed findings and methodological limitations. Moreover, no study has yet characterized the relationship between FER ability and level of psychosis-proneness. If FER ability varies continuously with psychosis-proneness, this suggests a relationship between FER and polygenic risk factors.MethodWe tested two large internet samples to see whether psychometric psychosis-proneness, as measured by the Schizotypal Personality Questionnaire-Brief (SPQ-B), is related to differences in face emotion identification and discrimination or other face processing abilities.ResultsExperiment 1 (n=2332) showed that psychosis-proneness predicts face emotion identification ability but not face gender identification ability. Experiment 2 (n=1514) demonstrated that psychosis-proneness also predicts performance on face emotion but not face identity discrimination. The tasks in Experiment 2 used identical stimuli and task parameters, differing only in emotion/identity judgment. Notably, the relationships demonstrated in Experiments 1 and 2 persisted even when individuals with the highest psychosis-proneness levels (the putative high-risk group) were excluded from analysis.ConclusionsOur data suggest that FER ability is related to individual differences in psychosis-like characteristics in the normal population, and that these differences cannot be accounted for by differences in face processing and/or visual perception. Our results suggest that FER may provide a useful candidate intermediate phenotype.

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de Castro-Catala, Marta, Neus Barrantes-Vidal, Tamara Sheinbaum, Artal Moreno-Fortuny, Thomas R. Kwapil, and Araceli Rosa. "COMT-by-Sex Interaction Effect on Psychosis Proneness." BioMed Research International 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/829237.

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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.

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Burch, Giles St J., David R. Hemsley, Christos Pavelis, and Philip J. Corr. "Personality, creativity and latent inhibition." European Journal of Personality 20, no. 2 (March 2006): 107–22. http://dx.doi.org/10.1002/per.572.

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The current study set out to investigate the relationship between creativity, multi‐dimensional schizotypy and personality more generally. This was achieved by analysing scores on a range of personality scales and measures of creativity, where it was found that the creativity measures were more closely related to asocial‐schizotypy than positive‐schizotypy. The study also sought to test Eysenck's prediction (1993, 1995) that, given the putative relationship between creativity and psychosis‐proneness, high psychosis‐prone scoring individuals and high creativity scoring individuals would demonstrate the same cognitive style of ‘overinclusiveness’ on latent inhibition. However, the results failed to demonstrate any evidence of a shared ‘widening of the associative horizon’ between high creativity and high psychosis‐prone scorers. The findings are discussed in relation to multi‐dimensional schizotypy. Copyright © 2006 John Wiley & Sons, Ltd.

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Mason, O., C. J. A. Morgan, S. K. Dhiman, A. Patel, N. Parti, A. Patel, and H. V. Curran. "Acute cannabis use causes increased psychotomimetic experiences in individuals prone to psychosis." Psychological Medicine 39, no. 6 (November 19, 2008): 951–56. http://dx.doi.org/10.1017/s0033291708004741.

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BackgroundEpidemiological evidence suggests a link between cannabis use and psychosis. A variety of factors have been proposed to mediate an individual's vulnerability to the harmful effects of the drug, one of which is their psychosis proneness. We hypothesized that highly psychosis-prone individuals would report more marked psychotic experiences under the acute influence of cannabis.MethodA group of cannabis users (n=140) completed the Psychotomimetic States Inventory (PSI) once while acutely intoxicated and again when free of cannabis. A control group (n=144) completed the PSI on two parallel test days. All participants also completed a drug history and the Schizotypal Personality Questionnaire (SPQ). Highly psychosis-prone individuals from both groups were then compared with individuals scoring low on psychosis proneness by taking those in each group scoring above and below the upper and lower quartiles using norms for the SPQ.ResultsSmoking cannabis in a naturalistic setting reliably induced marked increases in psychotomimetic symptoms. Consistent with predictions, highly psychosis-prone individuals experienced enhanced psychotomimetic states following acute cannabis use.ConclusionsThese findings suggest that an individual's response to acute cannabis and their psychosis-proneness scores are related and both may be markers of vulnerability to the harmful effects of this drug.

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Thaker, Gunvant, Marianne Moran M.S., R.N., Helene Adami, and Shawn Cassady. "Psychosis proneness scales in schizophrenia spectrum personality disorders: Familial vs. nonfamilial samples." Psychiatry Research 46, no. 1 (January 1993): 47–57. http://dx.doi.org/10.1016/0165-1781(93)90007-4.

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Dissertations / Theses on the topic "Psychosis proneness; Laterality; Personality"

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Mason, Oliver John. "Schizotypy : questionnaire and experimental studies." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318896.

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Linney, Yvonne. "A quantitative genetic analysis of schizotypal personality traits and neuropsychological functioning." Thesis, King's College London (University of London), 2001. http://kclpure.kcl.ac.uk/portal/en/theses/a-quantitative-genetic-analysis-of-schizotypal-personality-traits-and-neuropsychological-functioning(cdce6371-4dd0-401e-873d-75fc5571afc1).html.

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Bonogofsky, Amber Nicole. "Self-report measures of psychopathic and schizotypal personality characteristics a confirmatory factor analysis of characteristics of antisocial behavior and hypothetical psychosis-proneness in a college sample /." CONNECT TO THIS TITLE ONLINE, 2007. http://etd.lib.umt.edu/theses/available/etd-06012007-120950/.

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Book chapters on the topic "Psychosis proneness; Laterality; Personality"

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"Psychosis Proneness." In Encyclopedia of Personality and Individual Differences, 4201. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-24612-3_302135.

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Dawson, Michael E., Anne M. Schelly, Erin A. Hazlett, Diane L. Filiony, and Keith H. Nuechterlein. "Attention, startle eye-blink modification, and psychosis proneness." In Schizotypal Personality, 250–71. Cambridge University Press, 1995. http://dx.doi.org/10.1017/cbo9780511759031.012.

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