Dr Aris carried out a cognitive psychology experiment investigating the effect of different encoding strategies on long-term recall. He tested 10 participants on a word recall task under two conditions: Condition 1 (acoustic encoding) and Condition 2 (semantic encoding). Dr Aris decided to carry out a statistical test on his data 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 words recalled in Condition 1 (acoustic encoding) | Number of words recalled in Condition 2 (semantic encoding) | Difference | Rank | Rank if positive | Rank if negative |
|---|---|---|---|---|---|---|
| P1 | 14 | 18 | ||||
| P2 | 11 | 11 | ||||
| P3 | 15 | 20 | ||||
| P4 | 12 | 14 | ||||
| P5 | 18 | 25 | ||||
| P6 | 16 | 15 | ||||
| P7 | 10 | 19 | ||||
| P8 | 9 | 19 | ||||
| P9 | 17 | 15 | ||||
| P10 | 8 | 20 | ||||
| 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.
