Implementing the Four Levels is a companion book to Berrett- Koehler's bestseller Evaluating Training Programs, which has sold over 47,000 copies across 3 editions. Evaluating Training Programs is the standard work on Kirkpatrick's four- level evaluation model, which is the most widely used evaluation approach in the training/human resource development world. It contains bare-bones explanations of the four levels (they being REACTION, LEARNING, BEHAVIOR, and RESULTS) and then case studies of the four levels in action. This new book presents how to implement those four levels by using seven keys for practical application.