A psychologist conducted a study to investigate whether a one-week digital detox increases selective attention span. A group of six participants completed an attention task before the detox and another equivalent attention task after the detox. The maximum possible score on each task was 40, where a higher score indicates a stronger selective attention span.
The results of the study are shown in the table below.
| Participant | Score Before Detox | Score After Detox |
|---|---|---|
| A | 18 | 24 |
| B | 22 | 31 |
| C | 15 | 15 |
| D | 29 | 35 |
| E | 24 | 28 |
| F | 12 | 20 |
What would be the appropriate inferential statistical test to use to analyse the data from this study?
Chi-square test
Mann-Whitney U test
Sign test
Wilcoxon Signed Ranks 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.