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University Degree: Cognitive Psychology
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Is schizophrenia caused by genetic (nature) or environmental (nurture) factors? Critically discuss with reference to both psychological theory and research.
Schizophrenia is generally characterised by disturbances in Thoughts, e.g., delusions, Perception, e.g., hallucinations, Language, e.g., disconnected ideas and Affect e.g., flattening of emotion. For a diagnosis, symptoms must have been present for six months and include at least one month of active symptom (DSM - 5). . Symptoms typically come on gradually, begin in young adulthood, and last a long time there are three different types of symptoms associated with schizophrenia: ?positive symptoms?, ?negative symptoms? and ?catatonia and inappropriate effect.
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It is believed that NREM is the sleep phase in which the majority of mental development and maintenance occurs. Research has shown support for this in studies where it was found that declarative and non-procedural memory was improved after short periods of slow wave sleep when compared with control participants who were subjected to mild sleep deprivation. (Tucker et al, 2006) One function of sleep identified through research findings is the maintenance of mental health. Sleep deprivation can cause an increase in the likelihood depressive symptoms or disorders such as anxiety in an individual.
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