This book on the monitoring and evaluation of development projects and programmes is the fruit of some thirty years' experience as a project manager and evaluator.The book begins by covering the basic concepts of development projects, programmes and plans, and the notions of monitoring, evaluation, indicators, targets and evaluation criteria, such as relevance, coherence, effects, impacts, effectiveness, efficiency, sustainability and gender and human rights considerations.It goes on to discuss ex-ante, or a priori, evaluation methods, which are carried out before projects are implemented, and ex-post, or a posteriori, evaluation methods, which are carried out during or at the end of project implementation, and which may be a mid-term evaluation, a final evaluation or a retrospective evaluation.