Dr. Aris carried out a cognitive psychology experiment investigating the effect of haptic feedback on spatial reasoning. He tested 10 participants on a 3D block assembly task under two conditions: Condition A (without haptic feedback) and Condition B (with haptic feedback). Dr. Aris decided to carry out a statistical analysis on the number of structural errors made by each participant using a Wilcoxon Signed Ranks test.
Complete Table 1 and calculate the observed value of T T\,T for Dr. Aris's data.
Table 1
| Participant | Number of errors in Condition A (without haptic feedback) | Number of errors in Condition B (with haptic feedback) | Difference | Rank | Rank if positive | Rank if negative |
|---|---|---|---|---|---|---|
| A | 14 | 10 | ||||
| B | 11 | 11 | ||||
| C | 15 | 12 | ||||
| D | 9 | 10 | ||||
| E | 18 | 13 | ||||
| F | 12 | 14 | ||||
| G | 16 | 11 | ||||
| H | 13 | 7 | ||||
| I | 10 | 12 | ||||
| J | 17 | 9 | ||||
| Total: |
Practise Edexcel A Level Psychology Research methods and skills with exam-style questions for A Level Psychology. 657 questions covering Research methods and skills, matched to the Edexcel A Level Psychology (9PS0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
