Similar words for similar concepts turn up in many widely scattered languages. Some linguists insist that this is simply due to chance while others claim that many if not all of the world's languages descended from a single prehistoric language. Yet neither position in this strident controversy has been analyzed or supported with statistics. New computerized statistical techniques can help determine whether or not words in different languages have an ancestral connection. These flexible techniques are explained, broken into steps, and illustrated in a manner that provides the necessary...

Writing allows people to convey information to others who are remote in time and space, vastly increasing the range over which people can cooperate and the amount they can learn. Mastering the writing system of one's language is crucial for success in a modern society. This book examines how children learn to write words. It provides a theoretical framework that integrates findings from a wide range of age groups--from children who are producing their first scribbles to experienced spellers who are writing complex words. To set the stage for these discussions, early chapters of the book...