Noah attends a weekly board-game club and keeps a tally whenever a player disputes a rule. Before play begins, every player signs a consent form which says that rule disputes will be counted. Noah divides his tally sheet into the first 20 minutes and the final 20 minutes. Next to the final column, he has written, "This total should be higher because players will be tired by then."
Explain how the data Noah collects might be affected by each of the following: the observer effect and observer bias.
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.