Henri Theils Contributions to Economics and Econometrics

PREFACE TO THE COLLECTION PREAMBLE The editors are pleased to present a selection of Henri Theils contributions to economics and econometrics in three volumes. In Volume I we have provided an overview of Theils contributions, a brief biography, an annotated bibliography of his research, and a selection of published and unpublished articles and chapters in books dealing with topics in econometrics. Volume IT contains Theils contributions to demand analysis and information theory. Volume ITI includes Theils contributions in economic policy and forecasting, and management science. The selection of articles is intended to provide examples of Theils many seminal and pathbreaking contributions to economics in such areas as econometrics, statistics, demand analysis, information theory, economic policy analysis, aggregation theory, forecasting, index numbers, management science, sociology, operations research, higher education and much more. The collection is also intended to serve as a tribute to him on the occasion of his 67th birthday.! These three volumes also highlight some of Theils contributions and service to the profession as a leader, advisor, administrator, teacher, and researcher. Theils contributions, which encompass many disciplines, have been extensively cited both in scientific and professional journals. These citations often place Theil among the top 10 researchers (ranked according to number of times cited) in the world in various disciplines.