Chapter 1 (by Greve) sets the scene for the book by examining the various definitions of the concepts of evaluation and best evidence and looks at the different models involved. He then presents an overview of the content of the book, which is divided into three parts: I: What Evaluation Is and Examples of Methods, focusing on the definition of evaluation and the different methods; II: Evaluation and Policy, with a focus on evaluation and policy-making; and Part III: Evaluation of Concrete Social Policy Areas, which looks at the present state of the art within different central welfare policies. The chapter ends with a discussion on the book’s limitations.