An introduction to the theory and practice of internal evaluation, the process by which staff members evaluate programmes or problems of direct relevance to an organization's management. The author defines the role and skills of internal evaluators, the unique characteristics of evaluation within an organizational context, and explains how to bridge the gap between evaluators and managers. How to identify the user's needs and select appropriate evaluation methods, the stages of internal evaluation growth and the techniques required at each stage and developing and managing the internal evaluation resource are all described in detail.