The emphasis of education as a driving force for the growth of agricultural productivity can be dated back to the early 1960s. However, most empirical work failed to take into account of the fact that production technology changes with time and consequently obscure the true contribution of...

This paper deals with the estimation of a random coefficient model. The virtue of this approach is that it considers firm heterogeneity, which conventional SFA models do not. When the model is applied to Polish farms, the results indicate that the conventional random and fixed effect models...