A research team took representative samples of adults from two areas. Every participant completed the same clinical assessment, using the same edition of the ICD.
| Area | Adults assessed | Adults meeting the criteria for at least one ICD mental health diagnosis |
|---|---|---|
| Northbank | 4,000 | 320 |
| Southmere | 2,000 | 200 |
Using these totals, the research team concluded that mental health problems were both more common and more severe in Northbank than in Southmere.
Explain two weaknesses of using these ICD classifications and statistics to support this conclusion.
69 exam-style questions on OCR GCSE Psychology 3.1 Key Concepts, covering 3.1.1 Defining mental health and prevalence, 3.1.2 Incidence of mental health problems over time, 3.1.3 Effects of stigma and discrimination, and 3.1.4 Effects on wider society. Each one has a worked solution and a mark scheme showing where the marks go.