Priya drinks an energy drink after college at about 6pm and scrolls on her phone in bed until she falls asleep. Her bedroom faces a busy main road, and she is woken several times a night by lorries passing. She has slept like this for two months and struggles to concentrate in lessons.
Explain two causes of Priya's insomnia.
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.