Arranged like an encyclopedia, this book, addressed to directors and sponsors of education/training programs, as well as evaluators and those studying to become evaluators, unifies and systematizes the field of evaluation by organizing its main concepts and techniques into one volume. Researched and documented articles, contributed by recognized experts, deal with major topics covering every aspect of evaluation, from accountability to variance. Arranged alphabetically for fast reference, each article is completely cross-referenced and followed by select annotated sources. As an additional aid, the book contains an exhaustive review of the field grouped according to eleven clearly delineated concept areas: Evaluation Models, Functions and Targets, Program Objectives and Standards, Social Context of Evaluation, Planning and Design, Systems Technologies, Variables, Measurement Approaches and Types, Technical Measurement Considerations, Reactive Concerns, and Analysis and Interpretation. (RC)