Introduction

2.1  This chapter discusses the different types of questions that evaluations can answer and provides a brief overview of the various types of evaluation that are possible. There are three broad classes of question which evaluation might be used to answer:

•  How was the policy delivered?

•  What difference did the policy make?

•  Did the benefits of the policy justify the costs?

2.2  In most cases, there will also be considerable value in understanding why the policy was delivered in the ways it was, why the policy made the difference it did (or not), and how the costs and benefits were generated.