A questionnaire asks commuters to rate how stressed they feel immediately before and immediately after their usual journey.
Before the journey, the scale runs from 1 (not at all stressed) to 5 (very stressed). After the journey, the scale runs from 1 (not at all stressed) to 3 (very stressed).
Explain one weakness caused by using a different number of points on the two rating scales.
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.