A clinical research team reviews MRI and SPECT results for three adults who have already received a diagnosis of schizophrenia. For each measure, the comparison value is the mean for adults of the same age who have not been diagnosed with schizophrenia.
| Person | Scan measure | Person's result | Comparison value |
|---|---|---|---|
| J | Frontal-lobe blood flow during a planning task (mL per 100 g of tissue per minute) | 39 | 51 |
| K | Combined hippocampal volume (mL) | 6.2 | 7.4 |
| L | Temporal-lobe blood flow during a quiet resting period (mL per 100 g of tissue per minute) | 60 | 48 |
Using the data, describe the pattern shown for each person and link it to one symptom or cognitive difficulty associated with schizophrenia. Then explain why these results cannot show that the brain differences caused 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.