A hospital followed three groups of people being treated for Parkinson's disease for six months. None had a diagnosis of schizophrenia or had reported hallucinations or delusions before the study. L-dopa raises dopamine activity.
| Daily dose of L-dopa (mg) | People who developed hallucinations or delusions (%) |
|---|---|
| 0 | 3 |
| 300 | 10 |
| 600 | 18 |
Using the data and your knowledge, explain why these findings are a strength of the dopamine hypothesis of schizophrenia.
144 exam-style questions on OCR GCSE Psychology 3.2 Theories/Explanations, covering 3.2.1 Clinical characteristics of schizophrenia, 3.2.2 Key statistics of schizophrenia, 3.2.3 Dopamine hypothesis of schizophrenia, 3.2.4 Brain structure and function in schizophrenia; criticisms, 3.2.5 Social drift theory of schizophrenia, 3.2.6 Schizophrenia research study: Daniel et al. (1991), 3.2.7 Clinical characteristics of clinical depression, 3.2.8 Key statistics of clinical depression, 3.2.9 Social rank theory of clinical depression, 3.2.10 ABC Model of clinical depression, and 3.2.11 Clinical Depression research study: Tandoc et al. (2015). Each one has a worked solution and a mark scheme showing where the marks go.