Welcome again to the exciting subject of psychology – the scientific study of mind and behavior. In the AS textbook for assessment and Qualifications Alliance (AQA) Psychology B, you were presented with the major approaches in psychology and some of the topics representing the core areas of social, cognitive, developmental, biological and individual differences. This book is aimed at the more advanced A2 level in your study of psy chology and builds on the knowledge and understanding gained at AS. The textbook has been design to prepare you for the AQA specification B examination. The A2 specification is divided into two units: unit 3 covers ‘child development’ and ‘applied options’ and unit 4 covers ‘approaches in psychology’, ‘debates in psychology’ and ‘methods in psychology’.