For instance, to what extent are people the product of their genes or upbringing? Why do we sleep and dream? How does the brain store memories and thoughts? Why do people obey authority? We also focus on how psychology can help to transform lives and improve the world. What are the best ways to promote and improve health? How can psychological research be used to understand and predict offending behaviour? How do our brains recover from injury? How can teachers encourage their pupils to grow in the face of adversity?