Dr Okafor has designed a memory training programme and hopes it will improve recall. She reads the instructions aloud to both the training group and the control group, then marks every participant's recall test herself.
Explain two ways Dr Okafor could reduce experimenter bias in this study.
173 exam-style questions on OCR GCSE Psychology 7.3 Analysing Research, covering 7.3.1 Types of Data, 7.3.2 Measures of central tendency, 7.3.3 Other descriptive statistics, 7.3.4 Tables, Charts and Graphs, 7.3.5 Reliability, 7.3.6 Validity and effects on validity, and 7.3.7 Sources of bias. Each one has a worked solution and a mark scheme showing where the marks go.