Researchers are investigating whether highlighting landmarks on a printed route affects recall of the route. Participants study a route and then write down as many of its 12 directions as they can remember.
A repeated measures pilot study used two routes matched for difficulty. The table shows the results.
| Order of conditions | Mean score for the first route | Mean score for the second route |
|---|---|---|
| Highlighted landmarks, then no highlighting | 9.2 out of 12 | 10.1 out of 12 |
| No highlighting, then highlighted landmarks | 6.4 out of 12 | 10.8 out of 12 |
Using the pilot results, explain why an independent measures design would be more suitable for the main study.
Explain one limitation of using an independent measures design in this study.
182 exam-style questions on OCR GCSE Psychology 7.1 Planning Research, covering 7.1.1 Hypotheses, 7.1.2 Variables, 7.1.3 Experimental Designs, 7.1.4 Populations and Sampling, 7.1.5 Ethical issues, and 7.1.6 Dealing with ethical issues and BPS Code. Each one has a worked solution and a mark scheme showing where the marks go.