E-learning, electronic or digital education, is one of the areas in which information and communication technologies, if although not in the most spectacular way, but have certainly had the deepest impact. All that first seemed to be just an extension of distance learning, and then of the...

We assess selection bias in estimated returns to workplace training by exploiting a field experiment with random assignment of workers to a one-week training program. We compare experimental estimates of this program with non-experimental estimates that are estimated by using a sample of agents...