The Edexcel course requires you to know about one psychologically-based treatment for schizophrenia. You will need to be able to compare this with a biological treatment. The psychological treatment is cognitive behavioural therapy (CBT) The biological treatment is drug therapy (sometimes called pharmacotherapy or chemotherapy).
Finding a solid topic is one of the most important steps when writing any type of paper. It can be particularly important when you are writing a psychology research paper or essay. Psychology is such a broad topic, so you want to find a topic that allows you to adequately cover the subject without becoming overwhelmed with information.