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1. Schizophrenia features: hallucinations, delusions, disorganized thinking, negative symptoms, catatonia, avolition, impaired cognitive functioning

2. Research methods: chi-squared test for nominal data, independent groups comparison, significance threshold comparison (p ≤ 0.01), thematic analysis strengths and weaknesses, use of open and closed interview questions

3. Carlsson et al. (2000): dopamine hypothesis investigation, interaction of glutamate and dopamine, use of secondary data, neurochemical explanations for schizophrenia

4. Neurotransmitters and schizophrenia: dopamine overactivity (positive symptoms), glutamate involvement (negative symptoms), antipsychotic medication targeting dopamine receptors, case application to Hector’s hallucinations and delusions

5. Diagnostic validity: DSM vs. ICD classification systems, inter-rater reliability issues, cultural bias, symptom overlap, reliability vs. validity trade-off, implications for treatment accuracy

6. Application in clinical psychology: critical values tables for Spearman’s rank, chi-squared distribution, Mann-Whitney U test, Wilcoxon signed-ranks test, significance level interpretation, hypothesis testing methodology in clinical settings

Edexcel A Level Psychology (9PS0) Oct 2020 Psychology (9PS0) directory

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Classification: Edexcel Paper 2

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Psychology 9PS0/02 October 2020 | Edexcel A Level Past Papers With Mark Scheme

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