On a busy bus, a researcher's helper stands near seated passengers. On some journeys the helper carries a walking stick and on others carries nothing. The researcher records how often a passenger offers the helper a seat.
Identify the type of experiment used in this study.
Field experiment
Laboratory experiment
Natural experiment
Naturalistic observation
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.