A researcher wants to compare how often adults living within 1 km of a leisure centre use it with how often adults living 5–8 km away use it. Three interviewers will interview 120 adults.
The researcher pilots two approaches with 12 adults.
| Pilot approach | Procedure | Pilot findings |
|---|---|---|
| A | Every adult is asked, "During the previous four weeks, how many times did you use the local leisure centre?" No additional questions are asked. | All 12 adults gave a number and each interview took an average of 4 minutes. However, three adults asked whether a visit only to the centre's cafe should be counted. |
| B | Each adult is asked, "Tell me about your visits to the local leisure centre", followed by questions based on their answer. | All 12 adults described reasons for visiting, but only seven stated their total number of visits. Each interview took an average of 16 minutes. |
Using the pilot findings, explain which approach the researcher should use and one change that should be made before the full study.
139 exam-style questions on OCR GCSE Psychology 7.2 Doing Research, covering 7.2.1 Experiments, 7.2.2 Interviews, 7.2.3 Questionnaires (Surveys), 7.2.4 Observations, 7.2.5 Case Studies, and 7.2.6 Correlations. Each one has a worked solution and a mark scheme showing where the marks go.