Classification of schizophrenia
Classification means placing schizophrenia into a category using agreed diagnostic rules. Clinicians use two main systems — the DSM and the ICD — to decide whether a patient's symptoms meet the criteria for schizophrenia.
Real World
In 2013, the US National Institute of Mental Health withdrew funding from DSM-based research, citing poor validity — this real policy decision illustrates exactly the classification reliability vs. validity debate examiners test.
Exam Focus
Distinguish DSM-5 from ICD-11 by system origin and key diagnostic difference (e.g., ICD-11 dropped the symptom subtypes) — vague 'two systems exist' answers lose marks.
Evaluation Scaffold
A four-step framework for high-quality evaluation. Use this for 'assess', 'evaluate', and 'to what extent' questions.
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