Worksheets on Edexcel GCSE Psychology 3.1 Psychological problems, covering 3.1.1 Symptoms and features (ICD), 3.1.2 Incidence over time, 3.1.3 Effects on individuals and society, 3.1.4 Influence of genes as an explanation, 3.1.5 Cognitive theory explanation of depression, 3.1.6 Learning theory explanation of addiction, 3.1.7 CBT as a treatment, and 3.1.8 Drugs as a treatment, with answers. Print them, or work through one on screen. Write your working straight onto the paper and Genie marks it question by question against the mark scheme.