Book excerpt: Learning to talk is probably the greatest milestone in a child's development: a deeply moving and often hilarious experience for all parents. In this charming and informative book, Britain's leading expert on the English language talks you through every stage in your child's language development. Over thirty years after its original publication, this new and updated edition of Listen to your Child shows us that while the world our children are growing up in may have changed, one thing has not: parents still need to listen. Gathering decades of research from psychologists and linguists, Professor Crystal shows how the more we know about language acquisition - from 'cooking' and 'babbling' to melodic 'scribble talk' and simple words and then to incessant chatter - the more there is to delight in. From birth to the early school years, Listen to your Child provides a painless introduction to the study of child language acquisition as well as invaluable advice for parents.