A psychologist investigates whether instrumental background music affects recall. Each participant studies the same list of 15 words for two minutes in the same quiet room. One group hears the same instrumental recording while studying and the other group studies in silence. All participants then have one minute to write down as many words as they can remember.
State one strength of the laboratory experiment used by the psychologist.
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.