Impact Evaluation: A Guide for Commissioners and Managers - DFID - (2015)

As the title suggests, this document is an in-depth guide for project staff seeking to understand and practice Impact Evaluation. This guide has a clear audience:

"In depth evaluation and methodological expertise is not assumed in this guide – rather readers are expected to have familiarity with evaluation issues and challenges; and with the demands of socio-economic development programmes. The guide signposts more specialist sources and references, but is mainly interested in equipping practical managers in the development sector with enough knowledge to allow them to have meaningful conversations with technical experts."

With that in mind, readers should already have an idea of what Impact Evaluation is, and how it works.