A researcher investigated the effect of environmental noise on memory retrieval using a repeated measures design, where the same participants took part in both conditions.
The researcher recorded the number of words correctly recalled by each participant in each condition.
Table 1: Mean number of words recalled and standard deviations
| Silent condition | Background music condition | |
|---|---|---|
| Mean | 11.2 | 8.4 |
| Standard deviation | 2.1 | 1.4 |
Explain how using counterbalancing might improve the design of this study.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.