A cognitive psychologist investigated whether synesthesia affects the speed of cross-modal sensory processing. They measured the reaction time (in milliseconds) of participants matching spoken words with physical color patches.
The results are shown in Table 1 below.
| Synesthetes | Non-synesthetes | |
|---|---|---|
| Mean reaction time (ms) | 412.5 | 530.2 |
Explain why an 'independent groups' design is suitable for this investigation.
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.