A sports psychologist investigates whether a new visualization training programme improves self-reported confidence levels in competitive athletes. A sample of 25 track athletes rate their confidence on a scale of 1 to 10 (where 1 represents 'no confidence' and 10 represents 'maximum confidence') both before starting the training programme and immediately after completing it.
Which of the following is the most appropriate inferential statistical test to analyse whether there is a significant difference in confidence ratings before and after the training?
Mann-Whitney U Test
Wilcoxon Signed Ranks Test
Chi-square Test of Independence
Sign Test
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.