Since its inception,Language Fileshas become one of the most widely adopted, consulted, and authoritative introductory textbooks to linguistics ever written. The scope of the text makes it suitable for use in a wide range of courses, while its unique organization into student-friendly, self-contained sections allows for tremendous flexibility in course design. The eleventh edition has been revised, clarified, and updated in many places. Additional readings have been added to all sections, and the number of cross-references between chapters has been increased. In many areas throughout the text and exercises, there are references to websites and online resources. In addition, the accompanyingLanguage Fileswebpage has links to all these sites as well as to many other websites related to language and linguistics that instructors and students may find interesting.