A psychologist investigates whether social contact is related to loneliness among residents of a supported-living centre. For each resident, the psychologist records the number of visits they received during the previous 28 days and their score on a loneliness questionnaire marked from 0 to 24.
Identify the two measurements used as co-variables in this investigation.
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.