A researcher grouped adult volunteers according to their usual amount of sleep. At an evening training session, all the volunteers learnt the same 20 safety instructions and completed the same supervised exercise routine. The following morning, the researcher measured their recall and muscle soreness.
| Measure | Group A | Group B |
|---|---|---|
| Mean sleep each night (hours) | 8.5 | 5.0 |
| Mean number of safety instructions recalled out of 20 | 17 | 10 |
| Mean muscle soreness score out of 10 | 3 | 7 |
Using the data, explain two benefits of sleep.
Suggest how Group A would be likely to differ from Group B in its response to a frustrating task. Explain your answer.
53 exam-style questions on OCR GCSE Psychology 6.1 Key Concepts, covering 6.1.1 Functions, features and benefits of sleep, 6.1.2 Causes of sleep disorders, and 6.1.3 Endogenous pacemakers and exogenous zeitgebers. Each one has a worked solution and a mark scheme showing where the marks go.