Downs, J. (2013). Persisting psychotic-like experiences are associated with both externalising and internalising psychopathology in a longitudinal general population child cohort. Schizophrenia Research, 144(1-3), 99-104. https://doi.org/10.1016/j.schres.2012.12.009Citing this paper Please note that where the full-text provided on King's Research Portal is the Author Accepted Manuscript or Post-Print version this may differ from the final Published version. If citing, it is advised that you check and use the publisher's definitive version for pagination, volume/issue, and date of publication details. And where the final published version is provided on the Research Portal, if citing you are again advised to check the publisher's website for any subsequent corrections. General rightsCopyright and moral rights for the publications made accessible in the Research Portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognize and abide by the legal requirements associated with these rights.•Users may download and print one copy of any publication from the Research Portal for the purpose of private study or research.•You may not further distribute the material or use it for any profit-making activity or commercial gain •You may freely distribute the URL identifying the publication in the Research Portal Take down policy If you believe that this document breaches copyright please contact librarypure@kcl.ac.uk providing details, and we will remove access to the work immediately and investigate your claim. Background: Persisting psychotic-like experiences (PLEs) are associated with an increased risk of internalising symptoms in adolescence. Whether this association holds similarly for externalising symptoms, and from mid-childhood, is unclear. This prospective study investigated the extent to which PLE persistence was associated with internalising and externalising psychopathology in a community sample of children aged 9-11 years at study commencement. Methods: 8099 children (mean age 10.4 years) completed questionnaires assessing PLEs, externalising and internalising symptoms. A subsample of 547 children completed reassessment, on average, two years later. Results: Two-thirds (66%) of children reported PLEs at baseline. Approximately two years later, PLEs persisted in 39% of those children. After adjustment for previous psychopathology and other potential confounds, children with persisting PLEs were at higher risk for internalising (odds ratio [OR]=1.94; 95% confidence interval [CI] 1.13-3.34) and externalising (OR=1.97; 95% CI 1.19-3.26) psychopathology than children whose PLEs remitted; and, than children who never presented PLEs. Conclusions: Persistent PLEs from mid-childhood are associated with later internalising and externalising psychopathology in the general population, whereas transitory PLEs may be part of a spectrum of normative childhood development. Interventions that target persistent PLEs may contribute to a reduction in common chi...

These findings support the view that not all types of positive and negative PLEs in adolescence are associated with depression and, therefore, they may not confer the same vulnerability for psychotic disorders.

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de su exploración en pacientes psicóticos; es decir, sin los efectos de la medicación, la hospitalización y las dificultades de comunicación, a la vez que abren posibilidades de aclarar los mecanismos subyacentes de la esquizotipia e incluso de la esquizofrenia (McCreery y Claridge, 1996).Actualmente, dentro del modelo dimensional de la psicopatología, se considera que los sínto-mas psicóticos son la expresión severa de rasgos presentes en la población general. Estos rasgos se manifiestan como variaciones observables entre los individuos, que van desde aquellos perfecta-INTRODUCCIÓN El estudio de los síntomas seudo-psicóticos (SSP) en poblaciones no clínicas es importante, debido a su potencial para ampliar la comprensión de los factores de riesgo en las psicosis, cuya investigación ha estado limitada tradicionalmente a los sujetos con trastornos psicóticos (Meehl, 1962;Venables, 1995;. La aparición ocasional de estas experiencias en la población normal permite estudiarlas sin las desventajas derivadas Revista de Psicopatología y Psicología Clínica Vol. 13, N.º 3, pp. 205-217, 2008 ISSN 1136-5420/08Agradecimientos: Este trabajo se llevó a cabo con el apoyo del Programa Alban, programa de becas de alto nivel de la Unión Europea para América Latina, beca n.º E06D101876CO, y del Ministerio de Educación y Ciencia I+D (código BSO2003-05561/PSCE). Resumen: Se han descrito experiencias psicóticas en poblaciones no clínicas. Estas experiencias pueden tener diferentes cursos evolutivos a largo plazo. La aparición de experiencias psicóticas ocasionales o síntomas seudo-psicóticos (SSP) en la población general abre posibilidades para comprender los mecanismos y factores de riesgo de la esquizotipia y de los trastornos del espectro esquizofrénico. El objetivo de este estudio es examinar la presencia de síntomas seudo-psicóticos (SSP) positivos, negativos y depresivos, en una muestra de 777 adolescentes de la población general utilizando para ello una escala autoadministrada. Los resultados hacen evidente la presencia de SSP en la muestra analizada. Las tres dimensiones de síntomas estuvieron significativamente correlacionadas entre sí. El aumento en los síntomas depresivos elevó las puntuaciones en las dimensiones positiva y negativa. Se encontraron diferencias de género en las puntuaciones de la dimensión depresiva. Palabras clave: Síntomas seudo-psicóticos, adolescentes, población general Psychotic-like symptoms in adolescents of the general populationAbstract: Psychotic-like experiences in non-clinical samples have been described. These experiences may evolve towards different outcomes in the long term ranging from social impairments to schizophrenia spectrum disorders. The emergence of occasional psychotic experiences or psychoticlike symptoms in the general population opens possibilities for understanding the mechanisms and risk factors for schizotypy and schizophrenic spectrum disorders. The purpose of this paper is to examine the prevalence of positive, negative and depressive psychotic-like symptoms in a sample of...