80 results on '"Kwapil, T."'
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2. Cognitive functioning throughout adulthood and illness stages in individuals with psychotic disorders and their unaffected siblings
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Velthorst E., Mollon J., Murray R. M., de Haan L., Germeys I. M., Glahn D. C., Arango C., van der Ven E., Di Forti M., Bernardo M., Guloksuz S., Delespaul P., Mezquida G., Amoretti S., Bobes J., Saiz P. A., Garcia-Portilla M. P., Santos J. L., Jimenez-Lopez E., Sanjuan J., Aguilar E. J., Arrojo M., Carracedo A., Lopez G., Gonzalez-Penas J., Parellada M., Atbasoglu C., Saka M. C., Ucok A., Alptekin K., Akdede B., Binbay T., Altinyazar V., Ulas H., Yalincetin B., Gumus-Akay G., Beyaz B. C., Soygur H., Cankurtaran E. S., Kaymak S. U., Maric N. P., Mihaljevic M. M., Petrovic S. A., Mirjanic T., Del-Ben C. M., Ferraro L., Gayer-Anderson C., Jones P. B., Jongsma H. E., Kirkbride J. B., La Cascia C., Lasalvia A., Tosato S., Llorca P. -M., Menezes P. R., Morgan C., Quattrone D., Menchetti M., Selten J. -P., Szoke A., Tarricone I., Tortelli A., McGuire P., Valmaggia L., Kempton M. J., van der Gaag M., Riecher-Rossler A., Bressan R. A., Barrantes-Vidal N., Nelson B., McGorry P., Pantelis C., Krebs M. -O., Ruhrmann S., Sachs G., Rutten B. P. F., van Os J., Alizadeh B. Z., van Amelsvoort T., Bartels-Velthuis A. A., Bruggeman R., van Beveren N. J., Luykx J. J., Cahn W., Simons C. J. P., Kahn R. S., Schirmbeck F., van Winkel R., Calem M., Tognin S., Modinos G., Pisani S., Kraan T. C., van Dam D. S., Burger N., Amminger G. P., Politis A., Goodall J., Borgwardt S., Studerus E., Gadelha A., Brietzke E., Asevedo G., Asevedo E., Zugman A., Dominguez-Martinez T., Monsonet M., Cristobal-Narvaez P., Racioppi A., Kwapil T. R., Kazes M., Daban C., Bourgin J., Gay O., Mam-Lam-Fook C., Nordholm D., Rander L., Krakauer K., Glenthoj L. B., Glenthoj B., Gebhard D., Arnhold J., Klosterkotter J., Lasser I., Winklbaur B., Reichenberg A., Velthorst E., Mollon J., Murray R.M., de Haan L., Germeys I.M., Glahn D.C., Arango C., van der Ven E., Di Forti M., Bernardo M., Guloksuz S., Delespaul P., Mezquida G., Amoretti S., Bobes J., Saiz P.A., Garcia-Portilla M.P., Santos J.L., Jimenez-Lopez E., Sanjuan J., Aguilar E.J., Arrojo M., Carracedo A., Lopez G., Gonzalez-Penas J., Parellada M., Atbasoglu C., Saka M.C., Ucok A., Alptekin K., Akdede B., Binbay T., Altinyazar V., Ulas H., Yalincetin B., Gumus-Akay G., Beyaz B.C., Soygur H., Cankurtaran E.S., Kaymak S.U., Maric N.P., Mihaljevic M.M., Petrovic S.A., Mirjanic T., Del-Ben C.M., Ferraro L., Gayer-Anderson C., Jones P.B., Jongsma H.E., Kirkbride J.B., La Cascia C., Lasalvia A., Tosato S., Llorca P.-M., Menezes P.R., Morgan C., Quattrone D., Menchetti M., Selten J.-P., Szoke A., Tarricone I., Tortelli A., McGuire P., Valmaggia L., Kempton M.J., van der Gaag M., Riecher-Rossler A., Bressan R.A., Barrantes-Vidal N., Nelson B., McGorry P., Pantelis C., Krebs M.-O., Ruhrmann S., Sachs G., Rutten B.P.F., van Os J., Alizadeh B.Z., van Amelsvoort T., Bartels-Velthuis A.A., Bruggeman R., van Beveren N.J., Luykx J.J., Cahn W., Simons C.J.P., Kahn R.S., Schirmbeck F., van Winkel R., Calem M., Tognin S., Modinos G., Pisani S., Kraan T.C., van Dam D.S., Burger N., Amminger G.P., Politis A., Goodall J., Borgwardt S., Studerus E., Gadelha A., Brietzke E., Asevedo G., Asevedo E., Zugman A., Dominguez-Martinez T., Monsonet M., Cristobal-Narvaez P., Racioppi A., Kwapil T.R., Kazes M., Daban C., Bourgin J., Gay O., Mam-Lam-Fook C., Nordholm D., Rander L., Krakauer K., Glenthoj L.B., Glenthoj B., Gebhard D., Arnhold J., Klosterkotter J., Lasser I., Winklbaur B., Reichenberg A., RS: MHeNs - R2 - Mental Health, Psychiatrie & Neuropsychologie, RS: MHeNs - R1 - Cognitive Neuropsychiatry and Clinical Neuroscience, Neurosciences, Psychiatry, Clinical Developmental Psychology, World Health Organization (WHO) Collaborating Center, Life Course Epidemiology (LCE), Groningen Institute for Gastro Intestinal Genetics and Immunology (3GI), Clinical Cognitive Neuropsychiatry Research Program (CCNP), Real World Studies in PharmacoEpidemiology, -Genetics, -Economics and -Therapy (PEGET), Adult Psychiatry, APH - Mental Health, Amsterdam Neuroscience - Complex Trait Genetics, and Amsterdam Neuroscience - Mood, Anxiety, Psychosis, Stress & Sleep
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0301 basic medicine ,validity ,medicine.medical_treatment ,CHILDHOOD ,Neuropsychological Tests ,FAMÍLIA ,episode ,Cognition ,0302 clinical medicine ,DEFICITS ,Settore MED/48 -Scienze Infermierist. e Tecn. Neuro-Psichiatriche e Riabilitat ,Medicine ,Cognitive impairment ,Psychiatry ,Symptom severity ,Cannabis use ,IMPAIRMENT ,ABILITY ,Psychiatry and Mental health ,Schizophrenia ,RELIABILITY ,Neuropsychological Test ,Life Sciences & Biomedicine ,Human ,Clinical psychology ,Adult ,Biochemistry & Molecular Biology ,impairment ,schizophrenia-patients ,ability ,GENETIC RISK ,Psychotic Disorder ,SCHIZOPHRENIA-PATIENTS ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,SDG 3 - Good Health and Well-being ,Settore M-PSI/08 - Psicologia Clinica ,Humans ,In patient ,Cognitive skill ,VALIDITY ,Antipsychotic ,Molecular Biology ,Settore MED/25 - Psichiatria ,Aged ,Cross-Sectional Studie ,DECLINE ,Science & Technology ,reliability ,business.industry ,Working memory ,Siblings ,Neurosciences ,Diagnostic markers ,medicine.disease ,Cross-Sectional Studies ,030104 developmental biology ,deficits ,Psychotic Disorders ,PSYCHOSIS, COGNITION, MULTICENTRIC STUDY ,Neurosciences & Neurology ,business ,EPISODE ,030217 neurology & neurosurgery - Abstract
The European Community’s Seventh Framework Programme under grant agreement No. HEALTH-F2-2010-241909 (EUGEI); The Spanish sample was supported by the Spanish Ministry of Science and Innovation, Instituto de Salud Carlos III (SAM16PE07CP1, PI16/02012, PI19/024) (...), Velthorst, E., Mollon, J., Murray, R.M., de Haan, L., Germeys, I.M., Glahn, D.C., Arango, C., van der Ven, E., Di Forti, M., Bernardo, M., Guloksuz, S., Delespaul, P., Mezquida, G., Amoretti, S., Bobes, J., Saiz, P.A., García-Portilla, M.P., Santos, J.L., Jiménez-López, E., Sanjuan, J., Aguilar, E.J., Arrojo, M., Carracedo, A., López, G., González-Peñas, J., Parellada, M., Atbaşoğlu, C., Saka, M.C., Üçok, A., Alptekin, K., Akdede, B., Binbay, T., Altınyazar, V., Ulaş, H., Yalınçetin, B., Gümüş-Akay, G., Beyaz, B.C., Soygür, H., Cankurtaran, E.Ş., Kaymak, S.U., Maric, N.P., Mihaljevic, M.M., Petrovic, S.A., Mirjanic, T., Del-Ben, C.M., Ferraro, L., Gayer-Anderson, C., Jones, P.B., Jongsma, H.E., Kirkbride, J.B., La Cascia, C., Lasalvia, A., Tosato, S., Llorca, P.-M., Menezes, P.R., Morgan, C., Quattrone, D., Menchetti, M., Selten, J.-P., Szöke, A., Tarricone, I., Tortelli, A., McGuire, P., Valmaggia, L., Kempton, M.J., van der Gaag, M., Riecher-Rössler, A., Bressan, R.A., Barrantes-Vidal, N., Nelson, B., McGorry, P., Pantelis, C., Krebs, M.-O., Ruhrmann, S., Sachs, G., Rutten, B.P.F., van Os, J., Alizadeh, B.Z., van Amelsvoort, T., Bartels-Velthuis, A.A., Bruggeman, R., van Beveren, N.J., Luykx, J.J., Cahn, W., Simons, C.J.P., Kahn, R.S., Schirmbeck, F., van Winkel, R., Calem, M., Tognin, S., Modinos, G., Pisani, S., Kraan, T.C., van Dam, D.S., Burger, N., Amminger, G.P., Politis, A., Goodall, J., Borgwardt, S., Studerus, E., Gadelha, A., Brietzke, E., Asevedo, G., Asevedo, E., Zugman, A., Domínguez-Martínez, T., Monsonet, M., Cristóbal-Narváez, P., Racioppi, A., Kwapil, T.R., Kazes, M., Daban, C., Bourgin, J., Gay, O., Mam-Lam-Fook, C., Nordholm, D., Rander, L., Krakauer, K., Glenthøj, L.B., Glenthøj, B., Gebhard, D., Arnhold, J., Klosterkötter, J., Lasser, I., Winklbaur, B., Reichenberg, A., EU-GEI High Risk Study
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- 2021
3. Social Skills and Associated Psychopathology in Children with Chromosome 22q11.2 Deletion Syndrome: Implications for Interventions
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Shashi, V., Veerapandiyan, A., Schoch, K., Kwapil, T., Keshavan, M., Ip, E., and Hooper, S.
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Background: Although distinctive neuropsychological impairments have been delineated in children with chromosome 22q11 deletion syndrome (22q11DS), social skills and social cognition remain less well-characterised. Objective: To examine social skills and social cognition and their relationship with neuropsychological function/behaviour and psychiatric diagnoses in children with 22q11DS. Methods: Sixty-six children with 22q11DS and 54 control participants underwent neuropsychological testing and were administered the Diagnostic Analysis of Non-Verbal Accuracy (DANVA) for face and auditory emotion recognition, a measure of social cognition: their parents/guardians were administered the Social Skills Rating System (SSRS)--parent version, Child Behavior Checklist (CBCL)--parent version and the Computerised Diagnostic Interview Schedule for Children (C-DISC). Results: The 22q11DS group exhibited significantly lower social skills total score and more problem social behaviours, lower neurocognitive functioning, higher rates of anxiety disorders and more internalising symptoms than the control group. Participants with 22q11DS also exhibited significant deficits in their ability to read facial expressions compared with the control group, but performed no differently than the control participants in the processing of emotions by tone of voice. Within the 22q11DS group, higher social competency was correlated with higher global assessment of functioning and parental socio-economic status. Social competency was worse in those with anxiety disorders, attention deficit hyperactivity disorder, more than two psychiatric diagnoses on the C-DISC and higher internalising symptoms. No significant correlations of SSRS scores were seen with IQ, executive functions, attention, or verbal learning and memory. No correlations were found between social cognition and social skill scores. Conclusion: Our results indicate that social skills in children with 22q11DS are associated with behaviour/emotional functioning and not with neurocognition. Thus, treating the behaviour or emotional problems such as attention deficit hyperactivity disorder and anxiety disorders may provide a pathway for improving social skills in these children. (Contains 2 figures and 6 tables.)
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- 2012
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4. The role of stress‐regulation genes in moderating the association of stress and daily‐life psychotic experiences
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Cristóbal‐Narváez, P., Sheinbaum, T., Myin‐Germeys, I., Kwapil, T. R., de Castro‐Catala, M., Domínguez‐Martínez, T., Racioppi, A., Monsonet, M., Hinojosa‐Marqués, L., van Winkel, R., Rosa, A., and Barrantes‐Vidal, N.
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- 2017
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5. Predictors of expressed emotion, burden and quality of life in relatives of Mexican patients with psychosis
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Gómez-de-Regil, L., Kwapil, T. R., and Barrantes-Vidal, N.
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- 2014
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6. The expression of positive and negative schizotypy in daily life: an experience sampling study
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Kwapil, T. R., Brown, L. H., Silvia, P. J., Myin-Germeys, I., and Barrantes-Vidal, N.
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- 2012
7. Cognitive correlates of a functional COMT polymorphism in children with 22q11.2 deletion syndrome
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Shashi, V, Keshavan, M S, Howard, T D, Berry, M N, Basehore, M J, Lewandowski, E, and Kwapil, T R
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- 2006
8. Social anhedonia as a marker of schizotypy
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Kwapil, T R.
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- 2002
9. The assessment of negative symptoms in psychosis- prone young adults
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Kwapil, T R.
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- 2002
10. The Network Structure of Schizotypal Personality Traits
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Fonseca-Pedrero, Eduardo, Ortuno-Sierra, J, Debbane, M, Chan, Raymond, Cicero, D C, Zhang, L C, Brenner, C, Barkus, Emma, Linscott, R J, Kwapil, T, Barrantes-Vidal, Neus, Cohen, Alex S, Raine, Adrian, Compton, Michael, Tone, Erin B, Suhr, Julie, Inchausti, Felix, Bobes, Julio, Fumero, Axit, Giakoumaki, Stella, Tsaousis, Ioannis, Preti, Antonio, Chmielewski, Michael, Laloyaux, Julien, Mechri, Anwar, Lahmar, Mohamed, Wuthrich, Viviana, Laroi, Frank, Badcock, Johanna C, Jablensky, Assen, Isvoranu, Adela, Epskamp, Sacha, Fried, Eiko, Fonseca-Pedrero, Eduardo, Ortuno-Sierra, J, Debbane, M, Chan, Raymond, Cicero, D C, Zhang, L C, Brenner, C, Barkus, Emma, Linscott, R J, Kwapil, T, Barrantes-Vidal, Neus, Cohen, Alex S, Raine, Adrian, Compton, Michael, Tone, Erin B, Suhr, Julie, Inchausti, Felix, Bobes, Julio, Fumero, Axit, Giakoumaki, Stella, Tsaousis, Ioannis, Preti, Antonio, Chmielewski, Michael, Laloyaux, Julien, Mechri, Anwar, Lahmar, Mohamed, Wuthrich, Viviana, Laroi, Frank, Badcock, Johanna C, Jablensky, Assen, Isvoranu, Adela, Epskamp, Sacha, and Fried, Eiko
- Abstract
Elucidating schizotypal traits is important if we are to understand the various manifestations of psychosis spectrum liability and to reliably identify individuals at high risk for psychosis. The present study examined the network structures of (1) 9 schizotypal personality domains and (2) 74 individual schizotypal items, and (3) explored whether networks differed across gender and culture (North America vs China). The study was conducted in a sample of 27001 participants from 12 countries and 21 sites (M age = 22.12; SD = 6.28; 37.5% males). The Schizotypal Personality Questionnaire (SPQ) was used to assess 74 self-report items aggregated in 9 domains. We used network models to estimate conditional dependence relations among variables. In the domain-level network, schizotypal traits were strongly interconnected. Predictability (explained variance of each node) ranged from 31% (odd/magical beliefs) to 55% (constricted affect), with a mean of 43.7%. In the item-level network, variables showed relations both within and across domains, although within-domain associations were generally stronger. The average predictability of SPQ items was 27.8%. The network structures of men and women were similar (r = .74), node centrality was similar across networks (r = .90), as was connectivity (195.59 and 199.70, respectively). North American and Chinese participants networks showed lower similarity in terms of structure (r = 0.44), node centrality (r = 0.56), and connectivity (180.35 and 153.97, respectively). In sum, the present article points to the value of conceptualizing schizotypal personality as a complex system of interacting cognitive, emotional, and affective characteristics.
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- 2018
11. Comparisons of schizotypal traits across 12 countries: Results from the International Consortium for Schizotypy Research
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Fonseca-Pedrero, Eduardo, Chan, Raymond, Debbane, M, Cicero, D C, Zhang, L C, Brenner, C, Barkus, Emma, Linscott, R J, Kwapil, T, Barrantes-Vidal, Neus, Cohen, Alex S, Raine, Adrian, Compton, Michael, Tone, Erin B, Suhr, Julie, Muniz, Jose, Hilderley, Alicia J, Fumero, Axit, Giakoumaki, Stella, Tsaousis, Ioannis, Preti, Antonio, Chmielewski, Michael, Laloyaux, Julien, Mechri, Anwar, Lahmar, Mohamed, Wuthrich, Viviana, Laroi, Frank, Badcock, Johanna C, Jablensky, Assen, Ortuno-Sierra, J, Fonseca-Pedrero, Eduardo, Chan, Raymond, Debbane, M, Cicero, D C, Zhang, L C, Brenner, C, Barkus, Emma, Linscott, R J, Kwapil, T, Barrantes-Vidal, Neus, Cohen, Alex S, Raine, Adrian, Compton, Michael, Tone, Erin B, Suhr, Julie, Muniz, Jose, Hilderley, Alicia J, Fumero, Axit, Giakoumaki, Stella, Tsaousis, Ioannis, Preti, Antonio, Chmielewski, Michael, Laloyaux, Julien, Mechri, Anwar, Lahmar, Mohamed, Wuthrich, Viviana, Laroi, Frank, Badcock, Johanna C, Jablensky, Assen, and Ortuno-Sierra, J
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2018 Background: Schizotypal traits are expressions of underlying vulnerability to psychotic disorders which have a potential impact on mental health status, neurocognition, quality of life, and daily functioning. To date, little research has examined epidemiologic landscape of schizotypal traits at the cross-national level. Our aim was to study the expression of schizotypal traits by sex, age, and country in a combined sample gathered from 12 countries. Methods: A total of 27,001 participants completed the Schizotypal Personality Questionnaire (SPQ). The mean age of participants was 22.12 (SD = 6.28); 37.5% (n = 10,126) were males. Results: Schizotypal traits varied according to sex, age, and country. Females scored higher than males in the positive dimension, whereas males scored higher in the disorganization dimension. By age, a significant decrease in the positive schizotypal traits was observed. Epidemiological expression of schizotypal traits varied by country. Moreover, several interactions by sex, age, and country were found. Conclusions: This pattern is similar to those found in patients with psychosis and psychotic-like experiences. These findings provide new insights and the opportunity to explore the phenotypic expression of schizotypal traits at cross-national level.
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- 2018
12. Brief assessment of schizotypal traits: A multinational study
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Fonseca-Pedrero, Eduardo, Ortuno-Sierra, J, Lucas-Molina, Beatriz, Debbane, M, Chan, Raymond, Cicero, D C, Zhang, L C, Brenner, C, Barkus, Emma, Linscott, R J, Kwapil, T, Barrantes-Vidal, Neus, Cohen, Alex S, Raine, Adrian, Compton, Michael, Tone, Erin B, Suhr, Julie, Bobes, Julio, Fumero, Axit, Giakoumaki, Stella, Tsaousis, Ioannis, Preti, Antonio, Chmielewski, Michael, Laloyaux, Julien, Mechri, Anwar, Lahmar, Mohamed, Wuthrich, Viviana, Laroi, Frank, Badcock, Johanna C, Jablensky, Assen, Barron, David, Swami, Viren, Tran, Ulrich, Voracek, Martin, Fonseca-Pedrero, Eduardo, Ortuno-Sierra, J, Lucas-Molina, Beatriz, Debbane, M, Chan, Raymond, Cicero, D C, Zhang, L C, Brenner, C, Barkus, Emma, Linscott, R J, Kwapil, T, Barrantes-Vidal, Neus, Cohen, Alex S, Raine, Adrian, Compton, Michael, Tone, Erin B, Suhr, Julie, Bobes, Julio, Fumero, Axit, Giakoumaki, Stella, Tsaousis, Ioannis, Preti, Antonio, Chmielewski, Michael, Laloyaux, Julien, Mechri, Anwar, Lahmar, Mohamed, Wuthrich, Viviana, Laroi, Frank, Badcock, Johanna C, Jablensky, Assen, Barron, David, Swami, Viren, Tran, Ulrich, and Voracek, Martin
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The Schizotypal Personality Questionnaire-Brief (SPQ-B) was developed with the aim of examining variations in healthy trait schizotypy, as well as latent vulnerability to psychotic-spectrum disorders. No previous study has studied the cross-cultural validity of the SPQ-B in a large cross-national sample. The main goal of the present study was to analyze the reliability and the internal structure of SPQ-B scores in a multinational sample of 28,426 participants recruited from 14 countries. The mean age was 22.63. years (SD = 7.08; range 16-68. years), 37.7% (n = 10,711) were men. The omega coefficients were high, ranging from 0.86 to 0.92 for the total sample. Confirmatory factor analysis revealed that SPQ-B items were grouped either in a theoretical structure of three first-order factors (Cognitive-Perceptual, Interpersonal, and Disorganized) or in a bifactor model (three first-order factors plus a general factor of schizotypal personality). In addition, the results supported configural but not strong measurement invariance of SPQ-B scores across samples. These findings provide new information about the factor structure of schizotypal personality, and support the validity and utility of the SPQ-B, a brief and easy tool for assessing self-reported schizotypal traits, in cross-national research. Theoretical and clinical implications for diagnostic systems, psychosis models, and cross-national mental health strategies are derived from these results.
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- 2018
13. The structure of schizotypal personality traits: a cross-national study
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Fonseca-Pedrero, E., primary, Debbané, M., additional, Ortuño-Sierra, J., additional, Chan, R. C. K., additional, Cicero, D. C., additional, Zhang, L. C., additional, Brenner, C., additional, Barkus, E., additional, Linscott, R. J., additional, Kwapil, T., additional, Barrantes-Vidal, N., additional, Cohen, A., additional, Raine, A., additional, Compton, M. T., additional, Tone, E. B., additional, Suhr, J., additional, Muñiz, J., additional, Fumero, A., additional, Giakoumaki, S., additional, Tsaousis, I., additional, Preti, A., additional, Chmielewski, M., additional, Laloyaux, J., additional, Mechri, A., additional, Lahmar, M. A., additional, Wuthrich, V., additional, Larøi, F., additional, Badcock, J. C., additional, and Jablensky, A., additional
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- 2017
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14. The structure of schizotypal personality traits: a cross-national study.
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Ortuño-Sierra, J., Fonseca-Pedrero, E., Kwapil, T., Barrantes-Vidal, N., Cohen, A., Raine, A., Compton, M. T., Tone, E. B., Suhr, J., Fumero, A., Giakoumaki, S., Tsaousis, I., Muñiz, J., Preti, A., Chmielewski, M., Laloyaux, J., Larøi, F., Mechri, A., Lahmar, M. A., and Wuthrich, V.
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STATISTICAL correlation ,FACTOR analysis ,PSYCHOSES ,RELIABILITY (Personality trait) ,SCHIZOTYPAL personality disorder ,ETHNOLOGY research ,MULTITRAIT multimethod techniques - Abstract
BackgroundSchizotypal traits are considered a phenotypic-indicator of schizotypy, a latent personality organization reflecting a putative liability for psychosis. To date, no previous study has examined the comparability of factorial structures across samples originating from different countries and cultures. The main goal was to evaluate the factorial structure and reliability of the Schizotypal Personality Questionnaire (SPQ) scores by amalgamating data from studies conducted in 12 countries and across 21 sites.MethodThe overall sample consisted of 27 001 participants (37.5% males, n = 4251 drawn from the general population). The mean age was 22.12 years (s.d. = 6.28, range 16–55 years). The SPQ was used. Confirmatory factor analysis (CFA) and Multilevel CFA (ML-CFA) were used to evaluate the factor structure underlying the SPQ scores.ResultsAt the SPQ item level, the nine factor and second-order factor models showed adequate goodness-of-fit. At the SPQ subscale level, three- and four-factor models displayed better goodness-of-fit indices than other CFA models. ML-CFA showed that the intraclass correlation coefficients values were lower than 0.106. The three-factor model showed adequate goodness of fit indices in multilevel analysis. The ordinal α coefficients were high, ranging from 0.73 to 0.94 across individual samples, and from 0.84 to 0.91 for the combined sample.ConclusionsThe results are consistent with the conceptual notion that schizotypal personality is a multifaceted construct and support the validity and utility of SPQ in cross-cultural research. We discuss theoretical and clinical implications of our results for diagnostic systems, psychosis models and cross-national mental health strategies. [ABSTRACT FROM PUBLISHER]
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- 2018
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15. The Role of Schizotypy in the Study of the Etiology of Schizophrenia Spectrum Disorders
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Barrantes-Vidal, N., primary, Grant, P., additional, and Kwapil, T. R., additional
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- 2015
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16. Schizotypy: Looking Back and Moving Forward
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Kwapil, T. R., primary and Barrantes-Vidal, N., additional
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- 2014
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17. Predictors of expressed emotion, burden and quality of life in relatives of Mexican patients with psychosis
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Gómez‐de‐Regil, L., primary, Kwapil, T. R., additional, and Barrantes‐Vidal, N., additional
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- 2013
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18. Experience Sampling Methodology Questionnaire
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Kwapil, T. R., primary, Brown, L. H., additional, Silvia, P. J., additional, Myin-Germeys, I., additional, and Barrantes-Vidal, N., additional
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- 2012
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19. Social skills and associated psychopathology in children with chromosome 22q11.2 deletion syndrome: implications for interventions
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Shashi, V., primary, Veerapandiyan, A., additional, Schoch, K., additional, Kwapil, T., additional, Keshavan, M., additional, Ip, E., additional, and Hooper, S., additional
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- 2011
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20. From Environment to Therapy in Psychosis: A Real-World Momentary Assessment Approach
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Myin-Germeys, I., primary, Birchwood, M., additional, and Kwapil, T., additional
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- 2011
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21. The Dimensional Structure of the Wisconsin Schizotypy Scales: Factor Identification and Construct Validity
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Kwapil, T. R., primary, Barrantes-Vidal, N., additional, and Silvia, P. J., additional
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- 2007
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22. Tendency Toward Hypomania Increases Risk for Psychopathology
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Kwapil, T. R., primary, Miller, M. B., additional, Zinser, M. C., additional, Chapman, L. J., additional, and Eckblad, M., additional
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- 2000
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23. Validity and Usefulness of the Wisconsin Manual for Assessing Psychotic-like Experiences
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Kwapil, T. R., primary, Chapman, L. J., additional, and Chapman, J., additional
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- 1999
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24. Social Anhedonia Predicts Schizophrenia-Spectrum Disorders
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Kwapil, T., primary
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- 1999
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25. Magical Ideation and Social Anhedonia May Predict Proneness to Psychosis
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Kwapil, T. R., primary, Miller, M. B., additional, Zinser, M. C., additional, Chapman, J., additional, and Chapman, L. J., additional
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- 1998
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26. Deviant Olfactory Experiences as Indicators of Risk for Psychosis
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Kwapil, T. R., primary, Chapman, J. P., additional, Chapman, L. J., additional, and Miller, M. B., additional
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- 1996
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27. Dissociative experience in hypothetically psychosis-prone college students.
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Pope, Cameron A., Kwapil, Thomas R., Pope, C A, and Kwapil, T R
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- 2000
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28. A ten-year longitudinal study of intense ambivalence as a predictor of risk for psychopathology.
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Kwapil, Thomas R., Raulin, Michael L., Midthun, Julie C., Kwapil, T R, Raulin, M L, and Midthun, J C
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- 2000
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29. Social anhedonia as a predictor of the development of schizophrenia-spectrum disorders.
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Kwapil, Thomas R. and Kwapil, T R
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ANHEDONIA , *SCHIZOPHRENIA , *SOCIAL psychology - Abstract
College undergraduates (n = 34) identified by deviant scores (at least 1.96 SD above the mean) on the Revised Social Anhedonia (SocAnh) Scale (M. Eckblad, L. J. Chapman, J. P. Chapman, & M. Mishlove, 1982) were compared with control participants (n = 139) at an initial assessment and at a 10-year follow-up evaluation. Twenty-four percent of the SocAnh group were diagnosed with schizophrenia-spectrum disorders at the follow-up compared with only 1% of the control group, despite the fact that there had been no such difference between the groups at the initial assessment 10 years earlier. The SocAnh group exceeded the control group on severity of psychotic-like experiences and had poorer overall adjustment at the follow-up but not at the initial assessment. The groups did not differ on mood symptoms or substance-use disorders. Thus, the SocAnh Scale, unlike the Perceptual Aberration and Magical Ideation Scales, appears to identify individuals at specific risk for future development of schizophrenia-spectrum disorders. [ABSTRACT FROM AUTHOR]
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- 1998
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30. The five-factor personality structure of dissociative experiences
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Kwapil, T. R., Wrobel, M. J., and Pope, C. A.
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- 2002
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31. Smooth pursuit eye tracking and visual fixation in psychosis-prone individuals
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Gooding, D. C., Miller, M. D., and Kwapil, T. R.
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- 2000
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32. Predictors of outcome in the early course of first-episode psychosis
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Lizzette Gómez-de-Regil, Kwapil, T. R., Blanqué, J. M., Vainer, E., Montoro, M., and Barrantes-Vidal, N.
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Outcome predictors ,Outcome criteria ,Illness course ,Schizophrenia ,First-episode psychosis - Abstract
Background and Objectives: The identification of characteristics that predict clinical and functional outcomes in patients with schizophrenia and related psychotic disorders is essential for enhancing our understanding of the pathophysiology and the treatment of the disorder. The present study employed a retrospective design to examine the predictive validity of demographic, clinical, and psychosocial characteristics of first-episode patients on diagnosis, presence of residual psychotic symptoms, and number of psychotic episodes three to five years later. Methods: Information on baseline predictor variables and outcome was obtained from the clinical records of 44 patients who had their first psychotic episode between 1999 and 2003 and whose available follow-up period was at least 3 years long (mean = 5.7 years, SD = 1.3 years). Results: Male gender, single marital status, and poor premorbid adjustment were significantly associated with residual symptoms at follow-up. Poor insight at onset was significantly associated with subsequent relapses. Diagnosis of schizophrenia (as opposed to other psychotic disorders) at the follow-up assessment showed no significant association with any of the baseline predictors. Conclusions: Consistent with previous findings, the constellation of male gender, single status, poor premorbid adjustment and poor insight appeared to predict especially poor outcome. Residual symptoms appear to be an especially useful index of clinical and functional status for examining the course and outcome of first-episode psychosis.
33. Adaptation of the wisconsin scales of psychosis proneness to Spanish
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Agnès Ros-Morente, Rodriguez-Hansen, G., Vilagra-Ruiz, R., Kwapil, T. R., and Barrantes-Vidal, N.
34. Does the Eysenck Psychoticism Scale predict psychosis? A ten year longitudinal study
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Chapman, J. P., Chapman, L. J., and Kwapil, T. R.
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- 1994
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35. Adaptación de las Escalas de Vulnerabilidad a la Psicosis de Wisconsin al castellano.
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Ros-Morente, A., Rodríguez-Hansen, G., Vilagrà-Ruiz, R., R. Kwapil, T., and Barrantes-Vidal, N.
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PSYCHOSES , *AFFECTIVE disorders , *PATHOLOGICAL psychology , *NEUROPSYCHOLOGICAL tests , *PSYCHOMETRICS , *DIAGNOSIS - Abstract
Introduction. Nowadays the study of vulnerability to psychosis and early intervention is an area of great clinical impact and research. The aim of this study was to adapt the Wisconsin Scales of Vulnerability to Psychosis from English to Spanish. A set of five scales (Magical Ideation, Perceptual Aberration, Physical Anhedonia, Revised Social Anhedonia and Ambivalence) assess schizotypal traits in the general population and the possible risk of developing disorders embedded in the psychotic spectrum. Additionally, this tool contains a scale of Hypomaniac Personality to detect risk of affective spectrum psychosis. Methodology. The Wisconsin Scales of Vulnerability to Psychosis have been adapted following the back-translation method. The scales were translated to an original Spanish version, which was then translated again into English in order to assess the conceptual and semantic overlap with the original items. Results. All the items were back-translated and evaluated in respect to the original ones by an expert in the scales, and all of them were rated with a perfect equivalence (Type A) or satisfactory (Type B). Conclusions. The Spanish version of the Wisconsin Scales of Vulnerability to Psychosis shows good equivalence with the English one, thus allowing to measure affective and schizotypal traits in samples of Spanish speaking individuals properly. Future studies should test the reliability and validity of these scales in our environment. [ABSTRACT FROM AUTHOR]
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- 2010
36. Identifying gene-environment interactions in schizophrenia: contemporary challenges for integrated, large-scale investigations
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Rosana Shuhama, Gonzalo López, Viviana Storbini, Tolga Binbay, Ma Soledad Olmeda, Maria Calem, Marina Mihaljevic, Christos Pantelis, Halis Ulaş, Eva Velthorst, Jeroen Decoster, J. Malte Bumb, Ruud van Winkel, E. Cem Atbasoglu, Wolfgang Viechtbauer, Mirella Ruggeri, Erich Studerus, Daniele La Barbera, Domenico Berardi, Anita Riecher-Rössler, Stefan Borgwardt, Elsje van der Ven, Charlotte Rapp, Desiree Hilboll, Mark van der Gaag, Chiara Bonetto, Marie-Odile Krebs, Silvia Tenan, Monika Schlögelhofer, Robin M. Murray, Caterina La Cascia, Philip McGuire, Simona A. Stilo, Desmond Campbell, Fabienne Harrisberger, Teresa Sánchez, Catherine Derom, Franck Schürhoff, Philippe Delespaul, Jose Luis Santos, Emilio Sánchez, Stephan Ruhrmann, Luigi Rocco Chiri, Sabrina Cruz, Handan Noyan, Dominika Julkowski, Celso Arango, Merete Nordentoft, Stacey S. Cherny, Anne-Marie Galliot, Daniella van Dam, María Pouso, Asier Urruela Mora, G. Paul Amminger, Enrique García Bernardo, Ahmet Ayer, Tijana Mirjanic, Andrei Szöke, Anna Walter, Antonio Lasalvia, Isla Humphreys, Flora Frijda, Lieuwe de Haan, Neus Barrantes-Vidal, Nigel Williams, Burçin Cihan, Matthew J. Kempton, Ceren Akdeniz, Tamar Kraan, Andrea Tortelli, Barnaby Nelson, Marta Di Forti, Angelo Fioritti, Pedro Cuadrado, Eylem Sahin Cankurtaran, Emanuel Schwarz, Andreas Meyer-Lindenberg, Ilaria Tarricone, Laura Ferraro, Dan Rujescu, Anne-Marie Tronche, Laura Roldan, Bibiana Cabrera, Alp Üçok, Craig Morgan, Julio Sanjuán, Mauro Braca, Julio Bobes, Eric Y.H. Chen, Michael Conlon O'Donovan, Peter Holmans, Harald N. Aschauer, Sarah Ittig, Covadonga Martínez, Iris Lasser, Emiliano González, Aitziber Emaldi Cirión, Rachele Sartorio, F. Seminerio, Rodrigo A. Bressan, Ulrich Reininghaus, Elisa Brietzke, François Bourque, G Tripoli, Inez Myin-Germeys, Aziz Ferchiou, Gemma Modinos, Grégoire Baudin, Fabienne Soguel-Dit-Piquard, Cristina Marta Del-Ben, Gabriele Sachs, Elçin Akturan, Manuel Arrojo, Thomas R. Kwapil, Alice Mulè, Eva Mª Díaz Mesa, Federico Chierzi, Köksal Alptekin, Floor J. van der Meer, Pak C. Sham, Jim van Os, Adanna Onyejiaka, Mara Parellada, Bart P. F. Rutten, Jeanne Vilain, Michael John Owen, Sarah Tosato, Haldan Soygür, A.M. Marinaro, Stefania Tognin, Evert Thiery, Cathrin Rohleder, Mary Cannon, Miaoxin Li, F. Markus Leweke, Marc De Hert, Marta Rapado, Maria Gabriella Minenna, Pierre-Michel Llorca, Alexander Richards, Stéphane Jamain, Elles Messchaert, Nadja P. Maric, Semra Ulusoy, Elisa Ira, Peter G. Jones, Paulo Rossi Menezes, Patrick D. McGorry, Bernadette Winklbaur, Stephanie Beards, Nadine Burger, Güvem Gümüş-Akay, Marion Leboyer, James B. Kirkbride, Sinan Guloksuz, Ary Gadelha, E. Bulzacka, Carlos M. Romeo-Casabona, Gülşah Karadayı, Jean-Paul Selten, José Juan Rodríguez Solano, Kathryn Hubbard, Estela Jiménez, Thomas Charpeaud, Nikos C. Stefanis, Lucia Sideli, Miguel Bernardo, Jean-Romain Richard, Ivonne Donegani, Marco Seri, Lucia Valmaggia, Julia Paruch, Catherine van Zelst, Meram Can Saka, Heike Tost, Renata Smieskova, Thomas Marcacci, Nicholas John Craddock, Berna Binnur Akdede, Joachim Klosterkötter, Richard Bruggeman, Charlotte Gayer-Anderson, Sanja Andric, Elena Bonora, Angel Carracedo, Hasan Karadağ, Paula Cristobal, ANS - Amsterdam Neuroscience, Adult Psychiatry, Graduate School, Perceptual and Cognitive Neuroscience (PCN), Maastricht Univ, Kings Coll London, Mondriaan Mental Hlth Trust, Univ Groningen, Cardiff Univ, Cent Inst Mental Hlth, Dokuz Eylul Univ, Istanbul Univ, Ankara Univ, Yale Univ, Middle E Tech Univ, Diskapi YB Res & Training Hosp, Turkish Federat Schizophrenia Assoc, Ataturk Training & Res Hosp, Manisa Mental Hlth Hosp, Univ Complutense, Univ Barcelona, Univ Valencia, Univ Oviedo, Univ Santiago de Compostela, Hosp Virgen de la Luz, Hosp Univ Infanta Leonor Hosp Virgen Torre, Hosp Clin Univ, Hosp Psiquiatr Conxo, Univ Amsterdam, Vrije Univ Amsterdam, EMGO Inst Hlth & Care Res, Parnassia Psychiat Inst, Rivierduinen Psychiat Inst, Grp Hosp Mondor, Hop Henri Mondor, Univ Paris Est, Fdn Fondamental, CMP B CHU, Univ Auvergne, EPS Maison Blanche, UPC KU Leuven, UPC, Katholieke Univ Leuven, Assoc Sci Res Multiple Births, Univ Ghent, Univ Athens, Med Univ Vienna, Psychiat Univ Clin Basel, Univ Cologne, Univ Hong Kong, Univ Basque Country, Univ Zaragoza, Univ Cambridge, UCL, Royal Coll Surgeons Ireland, Univ Munich, Univ Bologna, Local Hlth Trust, Univ Palermo, P Giaccone Gen Hosp, Univ Melbourne, Universidade de São Paulo (USP), Univ Verona, Copenhagen Univ Hosp, Univ Paris 05, Univ Autonoma Barcelona, St Pere Claver Fundacio Sanitaria, Univ N Carolina, CIBERSAM, Universidade Federal de São Paulo (UNIFESP), Univ Belgrade, van Os J, Rutten BP, Myin-Germeys I, Delespaul P, Viechtbauer W, van Zelst C, Bruggeman R, Reininghaus U, Morgan C, Murray RM, Di Forti M, McGuire P, Valmaggia LR, Kempton MJ, Gayer-Anderson C, Hubbard K, Beards S, Stilo SA, Onyejiaka A, Bourque F, Modinos G, Tognin S, Calem M, O'Donovan MC, Owen MJ, Holmans P, Williams N, Craddock N, Richards A, Humphreys I, Meyer-Lindenberg A, Leweke FM, Tost H, Akdeniz C, Rohleder C, Bumb JM, Schwarz E, Alptekin K, Üçok A, Saka MC, Atbaşoğlu EC, Gülöksüz S, Gumus-Akay G, Cihan B, Karadağ H, Soygür H, Cankurtaran EŞ, Ulusoy S, Akdede B, Binbay T, Ayer A, Noyan H, Karadayı G, Akturan E, Ulaş H, Arango C, Parellada M, Bernardo M, Sanjuán J, Bobes J, Arrojo M, Santos JL, Cuadrado P, Rodríguez Solano JJ, Carracedo A, García Bernardo E, Roldán L, López G, Cabrera B, Cruz S, Díaz Mesa EM, Pouso M, Jiménez E, Sánchez T, Rapado M, González E, Martínez C, Sánchez E, Olmeda MS, de Haan L, Velthorst E, van der Gaag M, Selten JP, van Dam D, van der Ven E, van der Meer F, Messchaert E, Kraan T, Burger N, Leboyer M, Szoke A, Schürhoff F, Llorca PM, Jamain S, Tortelli A, Frijda F, Vilain J, Galliot AM, Baudin G, Ferchiou A, Richard JR, Bulzacka E, Charpeaud T, Tronche AM, De Hert M, van Winkel R, Decoster J, Derom C, Thiery E, Stefanis NC, Sachs G, Aschauer H, Lasser I, Winklbaur B, Schlögelhofer M, Riecher-Rössler A, Borgwardt S, Walter A, Harrisberger F, Smieskova R, Rapp C, Ittig S, Soguel-dit-Piquard F, Studerus E, Klosterkötter J, Ruhrmann S, Paruch J, Julkowski D, Hilboll D, Sham PC, Cherny SS, Chen EY, Campbell DD, Li M, Romeo-Casabona CM, Emaldi Cirión A, Urruela Mora A, Jones P, Kirkbride J, Cannon M, Rujescu D, Tarricone I, Berardi D, Bonora E, Seri M, Marcacci T, Chiri L, Chierzi F, Storbini V, Braca M, Minenna MG, Donegani I, Fioritti A, La Barbera D, La Cascia CE, Mulè A, Sideli L, Sartorio R, Ferraro L, Tripoli G, Seminerio F, Marinaro AM, McGorry P, Nelson B, Amminger GP, Pantelis C, Menezes PR, Del-Ben CM, Gallo Tenan SH, Shuhama R, Ruggeri M, Tosato S, Lasalvia A, Bonetto C, Ira E, Nordentoft M, Krebs MO, Barrantes-Vidal N, Cristóbal P, Kwapil TR, Brietzke E, Bressan RA, Gadelha A, Maric NP, Andric S, Mihaljevic M, Mirjanic T, Clinical Psychology, EMGO+ - Mental Health, Van Os, J., Rutten, B., Myin Germeys, I., Delespaul, P., Viechtbauer, W., Van Zelst, C., Bruggeman, R., Reininghaus, U., Morgan, C., Murray, R., Di Forti, M., Mcguire, P., Valmaggia, L., Kempton, M., Gayer Anderson, C., Hubbard, K., Beards, S., Stilo, S., Onyejiaka, A., Bourque, F., Modinos, G., Tognin, S., Calem, M., O'Donovan, M., Owen, M., Holmans, P., Williams, N., Craddock, N., Richards, A., Humphreys, I., Meyer Lindenberg, A., Leweke, F., Tost, H., Akdeniz, C., Rohleder, C., Bumb, J., Schwarz, E., Alptekin, K., Üçok, A., Saka, M., Atbagoǧlu, E., Gülöksüz, S., Gumus Akay, G., Cihan, B., Karadaǧ, H., Soygür, H., Cankurtaran, E., Ulusoy, S., Akdede, B., Binbay, T., Ayer, A., Noyan, H., Karadayi, G., Akturan, E., Ulaş, H., Arango, C., Parellada, M., Bernardo, M., Sanjuán, J., Bobes, J., Arrojo, M., Santos, J., Cuadrado, P., Solano, J., Carracedo, A., Bernardo, E., Roldán, L., López, G., Cabrera, B., Cruz, S., Mesa, E., Pouso, M., Jiménez, E., Sánchez, T., Rapado, M., González, E., Martínez, C., Sánchez, E., Olmeda, M., De Haan, L., Velthorst, E., Van Der Gaag, M., Selten, J., Van Dam, D., Van Der Ven, E., Van Der Meer, F., Messchaert, E., Kraan, T., Burger, N., Leboyer, M., Szoke, A., Schürhoff, F., Llorca, P., Jamain, S., Tortelli, A., Frijda, F., Vilain, J., Galliot, A., Baudin, G., Ferchiou, A., Richard, J., Bulzacka, E., Charpeaud, T., Tronche, A., De Hert, M., Van Winkel, R., Decoster, J., Derom, C., Thiery, E., Stefanis, N., Sachs, G., Aschauer, H., Lasser, I., Winklbaur, B., Schlögelhofer, M., Riecher Rössler, A., Borgwardt, S., Walter, A., Harrisberger, F., Smieskova, R., Rapp, C., Ittig, S., Soguel Dit Piquard, F., Studerus, E., Klosterkötter, J., Ruhrmann, S., Paruch, J., Julkowski, D., Hilboll, D., Sham, P., Cherny, S., Chen, E., Campbell, D., Li, M., Romeo Casabona, C., Cirión, A., Mora, A., Jones, P., Kirkbride, J., Cannon, M., Rujescu, D., Tarricone, I., Berardi, D., Bonora, E., Seri, M., Marcacci, T., Chiri, L., Chierzi, F., Storbini, V., Braca, M., Minenna, M., Donegani, I., Fioritti, A., LA BARBERA, D., LA CASCIA, C., Mulè, A., Sideli, L., Sartorio, C., Ferraro, L., Tripoli, G., Seminerio, F., Marinaro, A., Mcgorry, P., Nelson, B., Amminger, G., Pantelis, C., Menezes, P., Del Ben, C., Tenan, S., Shuhama, R., Ruggeri, M., Tosato, S., Lasalvia, A., Bonetto, C., Ira, E., Nordentoft, M., Krebs, M., Barrantes Vidal, N., Cristóbal, P., Kwapil, T., Brietzke, E., Bressan, R., Gadelha, A., Maric, N., Andric, S., Mihaljevic, M., Mirjanic, T., Psychiatrie & Neuropsychologie, Promovendi MHN, and RS: MHeNs - R2 - Mental Health
- Subjects
URBANICITY ,Schizophrenia (object-oriented programming) ,CHILDHOOD ,Genome-wide association study ,VARIANTS ,Social Environment ,psychosi ,03 medical and health sciences ,0302 clinical medicine ,PSYCHOSIS ,epidemiology ,gene-environment interaction ,genetics ,psychosis ,schizophrenia ,SDG 3 - Good Health and Well-being ,RISK-FACTOR ,Settore M-PSI/08 - Psicologia Clinica ,Genetic variation ,Humans ,Genetic Predisposition to Disease ,GENOME-WIDE ASSOCIATION ,Gene ,Settore MED/25 - Psichiatria ,METAANALYSIS ,Scale (chemistry) ,Psychosis ,Genetic variants ,Environment and Schizophrenia Invited ,CANNABIS USE ,3. Good health ,030227 psychiatry ,Psychiatry and Mental health ,Evolutionary biology ,Identification (biology) ,Schizophrenic Psychology ,Population Risk ,genetic ,Psychology ,FOLLOW-UP ,030217 neurology & neurosurgery ,FUTURE-DIRECTIONS ,Clinical psychology - Abstract
European Community Recent years have seen considerable progress in epidemiological and molecular genetic research into environmental and genetic factors in schizophrenia, but methodological uncertainties remain with regard to validating environmental exposures, and the population risk conferred by individual molecular genetic variants is small. There are now also a limited number of studies that have investigated molecular genetic candidate gene-environment interactions (G x E), however, so far, thorough replication of findings is rare and G x E research still faces several conceptual and methodological challenges. in this article, we aim to review these recent developments and illustrate how integrated, large-scale investigations may overcome contemporary challenges in G x E research, drawing on the example of a large, international, multi-center study into the identification and translational application of G x E in schizophrenia. While such investigations are now well underway, new challenges emerge for G x E research from late-breaking evidence that genetic variation and environmental exposures are, to a significant degree, shared across a range of psychiatric disorders, with potential overlap in phenotype. Maastricht Univ, Med Ctr, Dept Psychiat & Neuropsychol, Sch Mental Hlth & Neurosci,South Limburg Mental H, NL-6200 MD Maastricht, Netherlands Kings Coll London, Inst Psychiat, Dept Psychosis Studies, London WC2R 2LS, England Mondriaan Mental Hlth Trust, Maastricht, Heerlen, Netherlands Univ Groningen, Univ Med Ctr Groningen, Rob Giel Clin Res, Univ Ctr Psychiat, Groningen, Netherlands Kings Coll London, Inst Psychiat, Dept Hlth Serv & Populat Res, London WC2R 2LS, England Kings Coll London, Inst Psychiat, Dept Psychol, London WC2R 2LS, England Cardiff Univ, MRC, Ctr Neuropsychiat Genet, Cardiff CF10 3AX, S Glam, Wales Cent Inst Mental Hlth, Dept Psychiat & Psychotherapy, Mannheim, Germany Dokuz Eylul Univ, Sch Med, Dept Psychiat, Konak, Turkey Istanbul Univ, Istanbul Fac Med, Dept Psychiat, Psychot Disorders Res Unit, Istanbul, Turkey Ankara Univ, Sch Med, Dept Psychiat, Cebeci Hosp, TR-06100 Ankara, Turkey Ankara Univ, Brain Res Ctr, TR-06100 Ankara, Turkey Yale Univ, Sch Med, Dept Psychiat, New Haven, CT USA Middle E Tech Univ, Dept Psychol, TR-06531 Ankara, Turkey Diskapi YB Res & Training Hosp, Ankara, Turkey Turkish Federat Schizophrenia Assoc, Ankara, Turkey Ataturk Training & Res Hosp, Psychiat Clin, Ankara, Turkey Manisa Mental Hlth Hosp, Manisa, Turkey Istanbul Univ, Expt Med Res Inst, Dept Adv Neurol Sci, Istanbul Fac Med, Istanbul, Turkey Univ Complutense, IiSGM CIBERSAM, Dept Child & Adolescent Psychiat, Hosp Gen Univ Gregorio Maranon,Sch Med, E-28040 Madrid, Spain Univ Barcelona, Dept Psychiat, Hosp Clin, IDIBAPS,Ctr Invest Biomed Red Salud Mental CIBERS, Barcelona, Spain Univ Valencia, Sch Med, Dept Psychiat, Ctr Invest Biomed Red Salud Mental CIBERSAM, Valencia, Spain Univ Oviedo, Sch Med, Dept Med,Psychiat Area, Ctr Invest Biomed Red Salud Mental CIBERSAM, Oviedo, Spain Univ Santiago de Compostela, Dept Mental Hlth & Drug Addit Assistance, Hlth Serv Galicia,Psychiat Genet Grp IDIS, Hosp Clin,Ctr Invest Biomedica Red Salud Mental C, Santiago de Compostela 15706, Spain Hosp Virgen de la Luz, Serv Psiquiat, Dept Psychiat, Cuenca, Spain Hosp Univ Infanta Leonor Hosp Virgen Torre, Villa de Vallecas Mental Hlth Ctr, Villa de Vallecas Mental Hlth Dept, Madrid, Spain Hosp Univ Infanta Leonor Hosp Virgen Torre, Puente de Vallecas Mental Hlth Dept, Ctr Salud Mental Puente Vallecas, Madrid, Spain Hosp Clin Univ, Fdn Publ Galega Med Xenomica, Santiago de Compostela, Spain Univ Complutense, Sch Med, Hosp Gen Univ Gregorio Maranon, Dept Psychiat, E-28040 Madrid, Spain Hosp Psiquiatr Conxo, Santiago de Compostela, Spain Univ Amsterdam, Acad Med Ctr, Early Psychosis Sect, Dept Psychiat, NL-1105 AZ Amsterdam, Netherlands Vrije Univ Amsterdam, Dept Clin Psychol, Amsterdam, Netherlands EMGO Inst Hlth & Care Res, Amsterdam, Netherlands Parnassia Psychiat Inst, Dept Psychosis Res, the Hague, Netherlands Rivierduinen Psychiat Inst, Leiden, Netherlands Grp Hosp Mondor, AP HP, Creteil, France Hop Henri Mondor, INSERM, U955, Equipe 15, F-94010 Creteil, France Univ Paris Est, Fac Med, Creteil, France Fdn Fondamental, Creteil, France CMP B CHU, F-63003 Clermont Ferrand 1, France Univ Auvergne, EA 7280, Clermont Ferrand, France EPS Maison Blanche, Paris, France UPC KU Leuven, Dept Neurosci, UPC, Kortenberg, Belgium UPC, Dept Neurosci, Res Grp Psychiat, Leuven, Belgium Katholieke Univ Leuven, Univ Hosp Gasthuisberg, Dept Human Genet, Leuven, Belgium Assoc Sci Res Multiple Births, Ghent, Belgium Univ Ghent, Dept Neurol, Ghent Univ Hosp, B-9000 Ghent, Belgium Univ Athens, Sch Med, Eginit Hosp, Athens 11528, Greece Med Univ Vienna, Dept Psychiat & Psychotherapy, Vienna, Austria Psychiat Univ Clin Basel, Ctr Gender Res & Early Detect, Basel, Switzerland Psychiat Univ Clin Basel, Diagnost & Crisis Intervent Ctr, Basel, Switzerland Univ Cologne, Dept Psychiat & Psychotherapy, D-50931 Cologne, Germany Univ Hong Kong, Li Ka Shing Fac Med, Ctr Genom Sci, State Key Lab Brain & Cognit Sci, Hong Kong, Hong Kong, Peoples R China Univ Hong Kong, Li Ka Shing Fac Med, Dept Psychiat, Hong Kong, Hong Kong, Peoples R China Univ Hong Kong, Queen Mary Hosp, Li Ka Shing Fac Med, State Key Lab Brain & Cognit Sci, Hong Kong, Hong Kong, Peoples R China Univ Hong Kong, Queen Mary Hosp, Li Ka Shing Fac Med, Dept Psychiat, Hong Kong, Hong Kong, Peoples R China Univ Basque Country, Univ Deusto, Interuniv Chair Law & Human Genome Prov Govt Bisk, Bilbao, Bizkaia, Spain Univ Zaragoza, Zaragoza, Spain Univ Cambridge, Dept Psychiat, Cambridge, England UCL, Div Psychiat, London, England Royal Coll Surgeons Ireland, Beaumont Hosp, Educ & Res Ctr, Dept Psychiat, Dublin 9, Ireland Univ Munich, Dept Psychiat, Div Mol & Clin Neurobiol, Munich, Germany Univ Bologna, Alma Mater Studiorium, Psychiat Unit, Dept Med & Surg Sci, Bologna, Italy Univ Bologna, Alma Mater Studiorium, Genet Unit, Dept Med & Surg Sci, Bologna, Italy Local Hlth Trust, Dept Mental Hlth & Pathol Addict, Bologna, Italy Univ Palermo, Sect Psychiat, Dept Expt Biomed & Clin Neurosci, Palermo, Italy P Giaccone Gen Hosp, Unit Psychiat, Palermo, Italy Univ Melbourne, Ctr Youth Mental Hlth, Parkville, Vic 3052, Australia Univ Melbourne, Melbourne Neuropsychiat Ctr, Carlton, Vic, Australia Univ São Paulo, Fac Med, Dept Med Prevent, BR-01246903 São Paulo, Brazil Univ São Paulo, Nucleo Pesquina Saude Mental Populac, São Paulo, Brazil Univ São Paulo, Fac Med Ribeirao Preto, Dept Neurociencias & Ciencias Comportamento, BR-14049 Ribeirao Preto, Brazil Univ Verona, Sect Psychiat, Dept Publ Hlth & Community Med, I-37100 Verona, Italy Copenhagen Univ Hosp, Res Unit, Mental Hlth Ctr Copenhagen, Copenhagen, Denmark Univ Paris 05, Fac Med, Serv Hosp Univ, Hop St Anne, Paris, France Univ Autonoma Barcelona, Dept Psicol Clin & Salut, E-08193 Barcelona, Spain St Pere Claver Fundacio Sanitaria, Dept Salut Mental, Barcelona, Spain Univ N Carolina, Dept Psychol, Greensboro, NC 27412 USA CIBERSAM, Spanish Mental Hlth Res Network, Barcelona, Spain Universidade Federal de São Paulo, Dept Psychiat, PRISMA Early Intervent Program, São Paulo, Brazil Univ Belgrade, Sch Med, Beograd, Serbia Universidade Federal de São Paulo, Dept Psychiat, PRISMA Early Intervent Program, São Paulo, Brazil European Community: HEALTH-F2-2009-241909 Web of Science
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- 2014
37. Dissociation and insecure attachment as mediators of the relation between childhood emotional abuse and nonclinical paranoid traits.
- Author
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Mertens YL, Racioppi A, Sheinbaum T, Kwapil T, and Barrantes-Vidal N
- Abstract
Background : Research suggests dissociation and insecure attachment serve as explanatory mechanisms in the pathway from childhood trauma to paranoia. However, past work has not examined these mechanisms concurrently in nonclinical populations. Objective : The current study sought to examine dissociation and insecure attachment as parallel mediators of the association between childhood emotional abuse and paranoid traits. Furthermore, a serial mediation model with insecure attachment preceding dissociation in the explanatory pathway was explored. Methods : Eighty-nine nonclinically ascertained young adults were assessed for childhood emotional abuse, dissociation, attachment styles, and paranoid traits. Parallel and serial mediation models were tested. Results : The association of childhood emotional abuse with both interview-based and self-reported paranoid traits was significantly mediated by dissociation and preoccupied attachment. Fearful attachment was a significant mediator in the model for self-reported paranoid traits. No evidence for a serial mediation effect was found. Conclusions : The present findings extend support for dissociation and attachment insecurity as mechanisms underlying the link between childhood emotional maltreatment and paranoid traits. Longitudinal research is needed to inform whether insecure attachment contributes to dissociation along the pathways to paranoid traits., Competing Interests: No potential conflict of interest was reported by the authors., (© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.)
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- 2021
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38. Aberrant salience predicts psychotic-like experiences in daily life: An experience sampling study.
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Chun C, Gross G, Mielock A, and Kwapil T
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- Humans, Students, Ecological Momentary Assessment, Psychotic Disorders
- Abstract
Individuals at risk for schizophrenia-spectrum disorders tend to make atypical attributions of significance to unimportant stimuli. This experience of heightened significance, known as aberrant salience, is thought to contribute to psychotic symptoms. The Aberrant Salience Inventory (ASI) was designed to capture subclinical and clinical manifestations of the construct, and scores on the scale are associated with schizophrenia-like symptoms and behaviors in laboratory studies. Experience sampling methodology (ESM) studies have assessed momentary experiences of aberrant salience in daily life, but to our knowledge no study has examined real-world outcomes using the ASI as a trait measure of aberrant salience. The current study assessed the expression of aberrant salience in undergraduates oversampled for positive and negative schizotypy using ESM. Overall, findings of the expression of aberrant salience in daily life were similar to previous findings with positive schizotypy. Aberrant salience was associated with psychotic-like and disorganized symptoms, suspiciousness, and social impairment in daily life. It was unassociated with negative symptoms, stress, or affect in the moment. Aberrant salience did not moderate daily life associations of stress with schizotypic symptoms. The ASI subscales showed differential patterns of associations in daily life. These findings support the construct validity of the ASI and suggest that aberrant salience traits are relevant for real-world outcomes in schizotypy-spectrum psychopathology., Competing Interests: Declaration of competing interest The authors have no conflicts of interest to report., (Copyright © 2020 Elsevier B.V. All rights reserved.)
- Published
- 2020
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39. The Network Structure of Schizotypal Personality Traits.
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Fonseca-Pedrero E, Ortuño J, Debbané M, Chan RCK, Cicero D, Zhang LC, Brenner C, Barkus E, Linscott RJ, Kwapil T, Barrantes-Vidal N, Cohen A, Raine A, Compton MT, Tone EB, Suhr J, Inchausti F, Bobes J, Fumero A, Giakoumaki S, Tsaousis I, Preti A, Chmielewski M, Laloyaux J, Mechri A, Aymen Lahmar M, Wuthrich V, Larøi F, Badcock JC, Jablensky A, Isvoranu AM, Epskamp S, and Fried EI
- Subjects
- Adolescent, Adult, China ethnology, Female, Humans, Male, Middle Aged, North America ethnology, Young Adult, Models, Theoretical, Schizotypal Personality Disorder classification, Schizotypal Personality Disorder ethnology, Schizotypal Personality Disorder physiopathology
- Abstract
Elucidating schizotypal traits is important if we are to understand the various manifestations of psychosis spectrum liability and to reliably identify individuals at high risk for psychosis. The present study examined the network structures of (1) 9 schizotypal personality domains and (2) 74 individual schizotypal items, and (3) explored whether networks differed across gender and culture (North America vs China). The study was conducted in a sample of 27001 participants from 12 countries and 21 sites (M age = 22.12; SD = 6.28; 37.5% males). The Schizotypal Personality Questionnaire (SPQ) was used to assess 74 self-report items aggregated in 9 domains. We used network models to estimate conditional dependence relations among variables. In the domain-level network, schizotypal traits were strongly interconnected. Predictability (explained variance of each node) ranged from 31% (odd/magical beliefs) to 55% (constricted affect), with a mean of 43.7%. In the item-level network, variables showed relations both within and across domains, although within-domain associations were generally stronger. The average predictability of SPQ items was 27.8%. The network structures of men and women were similar (r = .74), node centrality was similar across networks (r = .90), as was connectivity (195.59 and 199.70, respectively). North American and Chinese participants networks showed lower similarity in terms of structure (r = 0.44), node centrality (r = 0.56), and connectivity (180.35 and 153.97, respectively). In sum, the present article points to the value of conceptualizing schizotypal personality as a complex system of interacting cognitive, emotional, and affective characteristics.
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- 2018
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40. Comparisons of schizotypal traits across 12 countries: Results from the International Consortium for Schizotypy Research.
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Fonseca-Pedrero E, Chan RCK, Debbané M, Cicero D, Zhang LC, Brenner C, Barkus E, Linscott RJ, Kwapil T, Barrantes-Vidal N, Cohen A, Raine A, Compton MT, Tone EB, Suhr J, Muñiz J, de Albéniz AP, Fumero A, Giakoumaki S, Tsaousis I, Preti A, Chmielewski M, Laloyaux J, Mechri A, Lahmar MA, Wuthrich V, Larøi F, Badcock JC, Jablensky A, and Ortuño-Sierra J
- Subjects
- Adolescent, Adult, Age Factors, Cross-Cultural Comparison, Female, Humans, Internationality, Male, Middle Aged, Sex Factors, Young Adult, Schizotypal Personality Disorder epidemiology, Schizotypal Personality Disorder psychology
- Abstract
Background: Schizotypal traits are expressions of underlying vulnerability to psychotic disorders which have a potential impact on mental health status, neurocognition, quality of life, and daily functioning. To date, little research has examined epidemiologic landscape of schizotypal traits at the cross-national level. Our aim was to study the expression of schizotypal traits by sex, age, and country in a combined sample gathered from 12 countries., Methods: A total of 27,001 participants completed the Schizotypal Personality Questionnaire (SPQ). The mean age of participants was 22.12 (SD=6.28); 37.5% (n=10,126) were males., Results: Schizotypal traits varied according to sex, age, and country. Females scored higher than males in the positive dimension, whereas males scored higher in the disorganization dimension. By age, a significant decrease in the positive schizotypal traits was observed. Epidemiological expression of schizotypal traits varied by country. Moreover, several interactions by sex, age, and country were found., Conclusions: This pattern is similar to those found in patients with psychosis and psychotic-like experiences. These findings provide new insights and the opportunity to explore the phenotypic expression of schizotypal traits at cross-national level., (Copyright © 2018 Elsevier B.V. All rights reserved.)
- Published
- 2018
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41. Brief assessment of schizotypal traits: A multinational study.
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Fonseca-Pedrero E, Ortuño-Sierra J, Lucas-Molina B, Debbané M, Chan RCK, Cicero DC, Zhang LC, Brenner C, Barkus E, Linscott RJ, Kwapil T, Barrantes-Vidal N, Cohen A, Raine A, Compton MT, Tone EB, Suhr J, Bobes J, Fumero A, Giakoumaki S, Tsaousis I, Preti A, Chmielewski M, Laloyaux J, Mechri A, Lahmar MA, Wuthrich V, Larøi F, Badcock JC, Jablensky A, Barron D, Swami V, Tran US, and Voracek M
- Subjects
- Adolescent, Adult, Aged, Cross-Cultural Comparison, Factor Analysis, Statistical, Female, Humans, Male, Middle Aged, Psychometrics instrumentation, Psychometrics methods, Reproducibility of Results, Young Adult, Personality Inventory standards, Psychiatric Status Rating Scales standards, Psychometrics standards, Schizotypal Personality Disorder diagnosis
- Abstract
The Schizotypal Personality Questionnaire-Brief (SPQ-B) was developed with the aim of examining variations in healthy trait schizotypy, as well as latent vulnerability to psychotic-spectrum disorders. No previous study has studied the cross-cultural validity of the SPQ-B in a large cross-national sample. The main goal of the present study was to analyze the reliability and the internal structure of SPQ-B scores in a multinational sample of 28,426 participants recruited from 14 countries. The mean age was 22.63years (SD=7.08; range 16-68years), 37.7% (n=10,711) were men. The omega coefficients were high, ranging from 0.86 to 0.92 for the total sample. Confirmatory factor analysis revealed that SPQ-B items were grouped either in a theoretical structure of three first-order factors (Cognitive-Perceptual, Interpersonal, and Disorganized) or in a bifactor model (three first-order factors plus a general factor of schizotypal personality). In addition, the results supported configural but not strong measurement invariance of SPQ-B scores across samples. These findings provide new information about the factor structure of schizotypal personality, and support the validity and utility of the SPQ-B, a brief and easy tool for assessing self-reported schizotypal traits, in cross-national research. Theoretical and clinical implications for diagnostic systems, psychosis models, and cross-national mental health strategies are derived from these results., (Copyright © 2017 Elsevier B.V. All rights reserved.)
- Published
- 2018
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42. Psychotic-like symptoms and positive schizotypy are associated with mixed and ambiguous handedness in an adolescent community sample.
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Barrantes-Vidal N, Gómez-de-Regil L, Navarro B, Vicens-Vilanova J, Obiols J, and Kwapil T
- Subjects
- Adolescent, Female, Humans, Male, Personality, Risk Factors, Surveys and Questionnaires, Functional Laterality, Psychotic Disorders epidemiology, Schizotypal Personality Disorder epidemiology
- Abstract
The objective of this study was to replicate the association between atypical handedness and psychosis-proneness in a representative sample of adolescents from the general population. It expands previous studies by (1) analyzing a variety of atypical handedness indexes (left, mixed, ambiguous, and inconsistent), (2) measuring comprehensively the multidimensionality of psychosis-proneness, and (3) analyzing the association of different patterns of atypical handedness with nonclinical dimensions of both trait (schizotypy) and sub-clinical symptom (psychotic-like experiences) levels. Seven hundred and twenty-eight adolescents were assessed for handedness by the 12-item self-report Annett Hand Preference Questionnaire and for psychosis-proneness by the Oxford-Liverpool Inventory of Feelings and Experiences and the Community Assessment of Psychic Experiences scales. Writing-hand alone did not detect associations between laterality and psychosis-proneness. Mixed- rather than left-handedness was related to psychosis-proneness, and this was more evident when analyzing subjects with ambiguous handedness exclusively. When analysis was restricted to subjects with non-ambiguous handedness, strong left-handedness was related to psychosis-proneness. The positive dimension showed a stronger association than the negative one with atypical handedness. Results partially support mixed-handedness as a marker of developmental disorders underlying both atypical lateralization and psychosis-proneness. Among various possible mixed-handedness patterns, inconsistent hand use across primary actions, and for the same action across time, seems particularly related to psychosis-proneness and thus requires further exploration., (Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.)
- Published
- 2013
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43. Discordance in Diagnoses and Treatment of Psychiatric Disorders in Children and Adolescents with 22q11.2 Deletion Syndrome.
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Young AS, Shashi V, Schoch K, Kwapil T, and Hooper SR
- Abstract
This study examines the rate of utilization of mental health services in children and adolescents with 22q11DS relative to their remarkably high rate of psychiatric disorders and behavior problems. Seventy-two children and adolescents with 22q11DS were participants; their parents completed the Diagnostic Interview Schedule for Children (DISC) and the Child Behavior Checklist (CBCL). The results indicated that 22q11DS children and adolescents have higher rates of psychopathology than the general pediatric population, with ADHD and anxiety disorders being the most common. However, among youth with 22q11DS, those with psychopathology are often no more likely to receive either pharmacological or non-pharmacological mental health care than those without a given psychiatric diagnosis. Thus, although psychopathology is fairly common in this sample, many children with 22q11DS may not be receiving needed psychiatric care. These results have significant implications for these children and their families, as well as for the health care providers who treat them. In particular, the results may suggest a need for careful screening of psychiatric disorders that are likely to affect this population as well, as making appropriate treatment recommendations to remedy childhood mental health problems. Since these children face an extraordinarily high risk of psychoses in late adolescence/adulthood, treatment of childhood psychopathology could be crucial in mitigating the risk/consequences of major psychiatric illnesses in later life.
- Published
- 2011
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44. Adaptation of the wisconsin scales of psychosis proneness to Spanish.
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Ros-Morente A, Rodriguez-Hansen G, Vilagrá-Ruiz R, Kwapil TR, and Barrantes-Vidal N
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- Disease Susceptibility diagnosis, Humans, Language, Psychological Tests, Surveys and Questionnaires, Psychotic Disorders diagnosis
- Abstract
Introduction: Nowadays the study of vulnerability to psychosis and early intervention is an area of great clinical impact and research. The aim of this study was to adapt the Wisconsin Scales of Vulnerability to Psychosis from English to Spanish. A set of five scales (Magical Ideation, Perceptual Aberration, Physical Anhedonia, Revised Social Anhedonia and Ambivalence) assess schizotypal traits in the general population and the possible risk of developing disorders embedded in the psychotic spectrum. Additionally, this tool contains a scale of Hypomaniac Personality to detect risk of affective spectrum psychosis., Methodology: The Wisconsin Scales of Vulnerability to Psychosis have been adapted following the back-translation method. The scales were translated to an original Spanish version, which was then translated again into English in order to assess the conceptual and semantic overlap with the original items., Results: All the items were back-translated and evaluated in respect to the original ones by an expert in the scales, and all of them were rated with a perfect equivalence (Type A) or satisfactory (Type B)., Conclusions: The Spanish version of the Wisconsin Scales of Vulnerability to Psychosis shows good equivalence with the English one, thus allowing to measure affective and schizotypal traits in samples of Spanish-speaking individuals properly. Future studies should test the reliability and validity of these scales in our environment.
- Published
- 2010
45. Momentary assessment research in psychosis.
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Oorschot M, Kwapil T, Delespaul P, and Myin-Germeys I
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- Affect, Affective Symptoms diagnosis, Affective Symptoms psychology, Delusions diagnosis, Delusions psychology, Feasibility Studies, Hallucinations diagnosis, Hallucinations psychology, Humans, Longitudinal Studies, Marijuana Abuse complications, Marijuana Abuse diagnosis, Marijuana Abuse psychology, Models, Psychological, Patient Compliance psychology, Psychiatric Status Rating Scales, Psychotic Disorders psychology, Stress, Psychological complications, Ambulatory Care, Computers, Handheld, Psychotic Disorders diagnosis, Schizophrenia diagnosis, Schizophrenic Psychology, Social Environment
- Abstract
There is an expanding interest to study psychosis in the realm of daily life. The study of the person in the context of daily life may provide a powerful addition to more conventional and cross-sectional research strategies in the study of psychosis. This article first discusses the nature of experience sampling research in psychosis and demonstrates the feasibility and validity of studies using the experience sampling method (ESM) in this patient group. Second, the article presents a review of all ESM research in psychosis with a special focus on (a) the phenomenology, (b) the etiology, and (c) psychological models of psychosis. Variability over time and the dynamic interplay with the environment were found to be essential features of the positive symptoms of psychosis, whereas behavioral patterns as well as self-reported affect in daily life reality might be essential when studying negative symptomatology. ESM contributes to a better understanding of the interplay between psychotic experiences and environmental features, such as stress or cannabis exposure. Finally, the study of symptomatic variability may fuel new research into psychological models and treatment of psychosis and the study of the person-environment interplay may foster new Gene x Environment interaction studies.
- Published
- 2009
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46. A longitudinal study of high scorers on the hypomanic personality scale.
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Kwapil TR, Miller MB, Zinser MC, Chapman LJ, Chapman J, and Eckblad M
- Subjects
- Adult, Case-Control Studies, Crime, Female, Follow-Up Studies, Humans, Male, Psychiatric Status Rating Scales, Severity of Illness Index, Social Adjustment, Bipolar Disorder psychology, Borderline Personality Disorder psychology, Depressive Disorder, Major psychology, Substance-Related Disorders psychology
- Abstract
Former college students (n = 36) identified by high scores on the Hypomanic Personality Scale (HYP; Eckblad & Chapman, 1986) were compared with control participants (n = 31) at a 13-year follow-up assessment. As hypothesized, the HYP group reported more bipolar disorders and major depressive episodes than the control group. The HYP group also exceeded the control group on the severity of psychotic-like experiences, symptoms of borderline personality disorder, and rates of substance use disorders. HYP group members with elevated scores on the Impulsive-Nonconformity Scale (Chapman et al., 1984) experienced greater rates of bipolar mood disorders, poorer overall adjustment, and higher rates of arrest than the remaining HYP or control participants.
- Published
- 2000
47. Wisconsin Card Sorting Test deficits in schizotypic individuals.
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Gooding DC, Kwapil TR, and Tallent KA
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- Feedback, Humans, Psychometrics, Reference Values, Risk Factors, Schizotypal Personality Disorder psychology, Set, Psychology, Students psychology, Concept Formation, Discrimination Learning, Mental Recall, Neuropsychological Tests statistics & numerical data, Schizotypal Personality Disorder diagnosis
- Abstract
The present study investigates executive functioning in schizotypic college students and control subjects using the Wisconsin Card Sorting Test (WCST). Inhibitory control and working memory, two aspects of executive functioning, were examined in deviantly high scorers on the Perceptual Aberration and Magical Ideation Scales (n=97), high scorers on the revised Social Anhedonia Scale (n=58), and in control subjects (n=104). The schizotypic groups displayed significantly more perseverative errors and achieved fewer categories than the control group. The two schizotypic groups did not differ from each other. We identified a subset of schizotypic individuals who also produced clinically deviant WCST profiles. The findings support the hypothesis that executive function deficits may precede the onset of schizophrenia and related illnesses.
- Published
- 1999
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48. Magical ideation and social anhedonia as predictors of psychosis proneness: a partial replication.
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Kwapil TR, Miller MB, Zinser MC, Chapman J, and Chapman LJ
- Subjects
- Adult, Affective Symptoms diagnosis, Affective Symptoms psychology, Disease Susceptibility, Female, Follow-Up Studies, Humans, Interpersonal Relations, Male, Psychotic Disorders psychology, Severity of Illness Index, Psychiatric Status Rating Scales statistics & numerical data, Psychotic Disorders diagnosis
- Abstract
The authors compared college students identified by high scores on the Magical Ideation Scale (M. Eckblad & L. J. Chapman, 1983) and the Revised Social Anhedonia Scale (MagSoc; n = 28; M. Eckblad, L. J. Chapman, J. P. Chapman, & M. Mishlove, 1982) with control participants (n = 20) at a 10-year follow-up assessment in an attempt to replicate L. J. Chapman, J. P. Chapman, T. R. Kwapil, M. Eckblad, and M. C. Zinser's (1994) report of heightened psychosis proneness in MagSoc individuals. The MagSoc group exceeded the control group on severity of psychotic-like experiences; ratings of schizotypal, paranoid, and borderline personality disorder symptoms; and rates of mood and substance use disorders. Two of the MagSoc participants but none of the control participants developed psychosis during the follow-up period (a nonsignificant difference). Consistent with L. J. Chapman et al.'s findings, the groups did not differ on rates of personality disorders or relatives with psychosis.
- Published
- 1997
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49. A longitudinal study of drug and alcohol use by psychosis-prone and impulsive-nonconforming individuals.
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Kwapil TR
- Subjects
- Adult, Alcoholism diagnosis, Alcoholism epidemiology, Comorbidity, Female, Follow-Up Studies, Humans, Impulsive Behavior diagnosis, Impulsive Behavior epidemiology, Longitudinal Studies, Male, Personality Assessment, Psychiatric Status Rating Scales, Psychotic Disorders diagnosis, Psychotic Disorders epidemiology, Risk Factors, Substance-Related Disorders diagnosis, Substance-Related Disorders epidemiology, Alcoholism psychology, Impulsive Behavior psychology, Psychotic Disorders psychology, Social Conformity, Substance-Related Disorders psychology
- Abstract
The rates of substance use and abuse are higher among psychotic patients and antisocial individuals than in the general population. In a 10-year longitudinal study, psychosis-prone individuals identified by the Perceptual Aberration (L. J. Chapman, J. P. Chapman, M. L. Raulin, 1976) and Magical Ideation (Per-Mag) scales (M. Eckblad & L. J. Chapman, 1983), and individuals with antisocial traits, identified by the Impulsive Nonconformity (Noncon) scale (L. J. Chapman et al., 1984), exceeded a control group on rates of substance use disorders. As hypothesized, the Per-Mag group demonstrated preferential patterns of substance use similar to those reported for schizophrenic patients. Participants who scored deviantly on both the Per-Mag and Noncon scales were at especially heightened risk for substance use disorders. Psychosis proneness at the initial screening predicted substance abuse at the follow-up evaluation, but substance abuse at the initial interview did not predict later clinical psychosis or psychoticlike experiences.
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- 1996
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50. Putatively psychosis-prone subjects 10 years later.
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Chapman LJ, Chapman JP, Kwapil TR, Eckblad M, and Zinser MC
- Subjects
- Adult, Female, Follow-Up Studies, Humans, Longitudinal Studies, Male, Personality Assessment statistics & numerical data, Psychometrics, Psychotic Disorders diagnosis, Reproducibility of Results, Risk Factors, Schizotypal Personality Disorder diagnosis, Personality Development, Psychotic Disorders psychology, Schizotypal Personality Disorder psychology, Social Adjustment, Stress, Psychological complications
- Abstract
The predictive validities of several indicators of psychosis proneness were evaluated in a 10-year longitudinal study (N = 508). As hypothesized, high scorers on the Perceptual Aberration Scale, Magical Ideation Scale, or both (n = 182), especially those who initially reported psychoticlike experiences of at least moderate deviance, exceeded control subjects (n = 153) on psychoses (revised 3rd edition of the Diagnostic and Statistical Manual of Mental Disorders), psychotic relatives, schizotypal symptoms, and psychoticlike experiences at follow up. Ss who initially scored high on the Magical Ideation Scale and above the mean on the Social Anhedonia Scale were especially deviant. The Physical Anhedonia Scale and the Impulsive Nonconformity Scale were not effective predictors of psychosis proneness.
- Published
- 1994
- Full Text
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