Marcus describes how he feels when he leaves his flat.
'I am constantly worrying that my home will burn down because I left the hob turned on. I keep picturing the whole building on fire and thinking it will be all my fault. This means every time I leave, I have to go back inside and check the dials exactly six times.'
Outline one cognitive characteristic of OCD and one behavioural characteristic of OCD that can be identified from the description provided by Marcus.
46 exam-style questions on AQA A Level Psychology Characteristics of phobias, depression and OCD. Each one has a worked solution and a mark scheme showing where the marks go.