New developments in evaluation on both sides of the Atlantic are discussed by the contributors to this book, in which American experiment-based research models are extended into European theory-based traditions. They explore the interaction between research and public policy in various national contexts, and call for improved usefulness of evaluation research in order to extend its utilization.nPart 1. The Spread of Evalution ResearchnPart 2. Evalution In and Administrative MachinerynPart 3. Improving Evalution Research StrategiesnPart 5. Future Needs and Prospects