An employer changes the weekly rota so that one warehouse team begins work at 06:00 and another begins at 10:00. This decision is made for staffing reasons before a psychologist plans a study. The psychologist later compares the two teams' scores on the same attention task.
Identify the correct classification of the psychologist's study.
Controlled observation, because the workers were tested under standardised conditions.
Correlation, because shift time and attention score were both recorded.
Natural experiment, because the employer created the shift difference.
Laboratory experiment, because both teams completed the same attention task.
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.