A ten-item questionnaire on exam stress is given to the same pupils twice, two weeks apart, and the two sets of scores are compared. Which type of reliability is being checked?
Internal reliability
External reliability
Inter-rater reliability
Ecological validity
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.