Is complex trauma associated with worse outcomes than non-complex trauma?

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Rudo Dube summarises a longitudinal study which finds that people exposed to complex trauma had higher levels of general psychopathology and were more likely to experience conditions such as PTSD, depression and psychotic symptoms.

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Complex trauma and complex problems: evidence from a cohort study

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Oluwaseun Oluwaranti reviews a cohort study which finds that participants exposed to complex trauma had more severe mental health problems and poorer cognitive function at 18 years of age.

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Cognitive functioning in psychosis: is neuropsychological decline continuous, generalised, and specific to schizophrenia?

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Emmeline Lagunes Cordoba and Derek Tracy explore a case control study that looks at cognitive change in people with schizophrenia and other psychoses in the decade following the first episode.

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Does teenage cannabis use lower intelligence?

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Ian Hamilton presents his debut blog on a recent prospective cohort study on the relationship between teenage cannabis use, IQ and educational attainment.

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Meta-analysis finds medium-sized deficit for IQ-change in schizophrenia patients

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When Kraepelin first described the symptoms of the disorder we now call schizophrenia, he drew particular attention towards the deterioration of cognitive function he observed in his patients and named their condition “dementia praecox”. To this day, cognitive deficits are still regarded as one of the key features of schizophrenia (and related diagnoses), and it [read the full story…]

Teenage cannabis use may reduce IQ in adulthood

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This well conducted prospective cohort study looks at the impact that cannabis use can have on the development of the brain over a 20 year period, from the teenage years to middle-age. The research studied 1,037 people from New Zealand who are part of the Dunedin Multidisciplinary Health and Development study, which followed participants from [read the full story…]