A doctor has confirmed that Safa has insomnia. Safa is waiting to hear whether she has gained a place on a training course. Measurements were taken for one week before she applied and for one week while she was waiting for the decision.
| Measure | Before applying | While waiting for the decision |
|---|---|---|
| Mean worry rating at bedtime, from 0 to 10 | 2 | 8 |
| Mean heart rate during the first 15 minutes after going to bed | 64 beats per minute | 88 beats per minute |
| Mean muscle tension rating at bedtime, from 0 to 10 | 2 | 8 |
Using the record, explain the most likely cause of Safa's insomnia and which form of insomnia would be expected. Your answer should also explain the pattern that would be expected in her sleep diary.
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.