Marcus has missed several university lectures because he feels unable to leave his student room. He has also stopped eating meals in the shared kitchen with his flatmates and prefers to stay isolated, playing video games late into the night. A clinical psychologist is assessing Marcus and is considering using 'dysfunction' as a key criterion for diagnosis.
Explain two weaknesses of using 'dysfunction' to diagnose Marcus's mental health condition.
110 exam-style questions on Edexcel A Level Psychology Content, covering Diagnosis of mental disorders (4 Ds), Classification systems (DSM and ICD), Schizophrenia and one other disorder, Treatments for the two disorders, Individual differences, and Developmental psychology. Each one has a worked solution and a mark scheme showing where the marks go.