This is a revised and updated edition. It describes a variety of ways in which training can be assessed for effectiveness and value. It covers the whole training process from the selection and planning of a training event through to the validation and testing of its outcome. Most of the concepts and techniques presented can be applied both to single events and to a complete programme. The revised text includes further guidance on constructing and using validation instruments, new material on the costing of training and details of the competence standards procuded by the Training and Development Lead Body. The book is designed as a practical guide to the subject and is written in non-technical language. It should be useful to newly appointed trainers and to line managers with training responsibility.