Ms Evans observes her own Year 8 class to record how often pupils lose concentration during a lesson. The pupils know she is recording their behaviour. Before the study, Ms Evans says she expects the boys to be more easily distracted than the girls.
Explain how the observer effect and observer bias could each affect the data in this study.
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.