This systematic, state-of-the-art survey is ideal for both novice researchers and professionals interested in extending their methodological repertoires.Novice researchers and professionals interested in extending their methodological repertoires will find practical guidance on and critical discussion of a variety of techniques essential for collecting, analysing and evaluating linguistic data. All 23 chapters are written by leading practitioners, who share their expertise in this systematic and state-of-the-art survey.Novice researchers and professionals interested in extending their methodological repertoires will find practical guidance on and critical discussion of a variety of techniques essential for collecting, analysing and evaluating linguistic data. All 23 chapters are written by leading practitioners, who share their expertise in this systematic and state-of-the-art survey.Methodological know-how has become one of the key qualifications in contemporary linguistics, which has a strong empirical focus. Containing 23 chapters, each devoted to a different research method, this volume brings together the expertise and insight of a range of established practitioners. The chapters are arranged in three parts, devoted to three different stages of empirical research: data collection, analysis and evaluation. In addition to detailed step-by-step introductions and illustrative case studies focusing on variation and change in English, each chapter addresses the strengths and weaknesses of the methodology and concludes with suggestions for further reading. This systematic, state-of-the-art survey is ideal for both novice researchers and professionals interested in extending their methodological repertoires. The book also has a companion website which provides readers with further information, links, resources, demonstrations, exercises and case studies related to each chapter.Introduction: investigating language variation and change Manfred Krug, Julia Schl?ter and Anlœ