A research team estimates the number of new cases of mental health problems in the UK during one year. Its mid-twentieth-century estimate is based mainly on hospital admissions. For its present-day estimate, the team uses nationally gathered electronic patient records, records of people entering NHS talking therapy through self-referral, and responses to a national survey asking whether symptoms began during that year. Repeat cases are removed.
Explain how each of the three present-day sources could produce a higher estimate than the mid-twentieth-century source.
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.