American society for training & development Kirkpatrick's four levels of training evaluation (American Society for Training & Development)

Don Kirkpatrick's groundbreaking Four Levels of Training Evaluation is the most widely used training evaluation model in the world. But how many variations of Kirkpatrick are in use today? And what number of misassumptions and faulty practices have crept in over 60 years? James and Wendy Kirkpatrick have written Kirkpatrick's Four Levels of Training Evaluation to set the record straight.