Avolition - The lack of motivation or ability to do tasks or activities that have an end goal, Anhedonia - The inability to feel pleasure, Speech Poverty - The inability to speak properly, characterised by lack of ability to produce fluent words; this is thought to reflect slowing or blocked thoughts, Catatonic Behaviour - A group of symptoms that usually involve a lack of movement and communication, and also can include agitation, confusion, and restlessness, Delusions - False beliefs that are firmly held despite being completely illogical, or for which there is no evidence, Hallucinations - Involve disturbances in perception . They are false perceptions that have no basis in reality, DSM V - Diagnostic tool published by the American Psychiatric Association, ICD 10 - A globally used diagnostic tool for epidemiology, health management and clinical purposes. This is maintained by the World Health Organization, Reliability of Diagnosis - The extent to which psychiatrists can agree on the same diagnosis when independently assessing patients, Validity of Diagnosis - Do different assessment systems arrive at the same diagnosis for the same patient, Gender Bias - Some diagnostic categories are biased towards pathologising one gender rather than the other, Culture Bias - Significant variation between countries when it comes to diagnosing schizophrenia, Comorbidity - Refers to more than one disorders or diseases that exist alongside a primary diagnosis, Symptom Overlap - Overlap between the symptoms of schizophrenia and other conditions, despite the claim that the classification of positive and negative symptoms would make for more valid diagnoses.,

Key Terms- Diagnosis and Classification of Schizophrenia

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