"A Child's World" is a major Channel 4 TV tie-in, which examines the development of children between the ages of 2 and 12. Focusing on behaviour and the mind, it charts the achievement that mark the journey to becoming a fully fledged person. Illustrated with photographs, the book examines how children gain a sense of self; navigate the social world; learn the vital skill of lying; make sense of the physical world; come to understand life, death and sex; and, finally, reach full independence.