This tenth volume of the Annual Review of Applied Linguistics (ARAL) concerns itself with a survey of applied linguistics broadly, as this series did in volume I and volume V. The changes which have occurred in the field generally over the past decade are impressive; indeed, a volume such as this one would have been quite impossible ten years ago. Some of the topics covered in this volume are ones to which this series has repeatedly returned—e.g., language planning, language-in-education planning, bilingualism; others are unique to this volume—e.g., language and aging, and still others represent sub-fields which have been treated previously but which have expanded significantly in the years since volume I was published—e.g., second-language acquisition, language testing.