Julian spends several hours each day checking locks and alignment of items in his room, experiencing intense anxiety if things are not 'just right'. His identical twin brother, Marcus, was also recently diagnosed with obsessive-compulsive disorder (OCD). A biological psychologist suggests that Julian’s symptoms are due to his genetic profile and altered brain activity.
Discuss the biological explanation(s) of obsessive-compulsive disorder (OCD). Refer to Julian and Marcus in your answer.
39 exam-style questions on AQA A Level Psychology Biological approach to OCD. Each one has a worked solution and a mark scheme showing where the marks go.