At a time when religious fundamentalism is having a huge impact upon the world, this book helps us to understand how people acquire, conceptualise and practise religion at both personal and social levels. At a time when religious fundamentalism is having a huge impact upon the world, this book helps us to understand how people acquire, conceptualise and practise religion at both personal and social levels. Explores religion both as a social phenomenon and as a form of inner experience. Explains why people believe what they do. Looks at the effects of religious and spiritual belief upon behaviour, and upon physical and psychological health. Outlines the various approaches to religious and spiritual experience. Surveys all relevant research.