Classic View Psychology A Level Edexcel A Level Psychology (9PS0) Clinical Psychology 5.1 Content Classic View 5.1.1 Diagnosis of Mental Health Disorders 5.1.2 Classification Systems 5.1.3 Schizophrenia, Anorexia Nervosa, Obsessive Compulsive Disorder and Unipolar Depression 5.1.4 Treatments 5.1.5 Individual Differences