A psychologist has invented a new memory technique and runs both conditions of her experiment herself. Before the test she tells the technique group, "This method should really help you remember more." She smiles and nods at the technique group while they learn, but not at the control group.
Explain how investigator effects and demand characteristics could each raise the scores in the technique condition.
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.