“...In this paper we develop a model to deal simultaneously with the holding of equipment and the choice of a level of usage. Based on individual data, our model...”

“...We survey the recent literature on the effects of active labor market policies on individual labor market outcomes like employment and income, for adult female...”

“...This paper discusses methods for evaluating the impacts of social programs prior to their implementation. Ex ante evaluation is useful for designing programs...”

“...In paired randomized experiments units are grouped in pairs, often based on covariate information, with random assignment within the pairs. Average treatment...”

“...This paper proposes a nonparametric method of estimating marginal treatment effects in heterogeneous populations. Building upon an insight of Heckman and...”

“...Previous studies have emphasized that Roeger's methodology generates too high markups. This feature is confirmed on the basis of the unrealistically low...”

“...This paper studies the optimal growth when research and development are explicitly distinguished. To this end, we perform the quantitative welfare analysis of...”

“...Every year millions of high school students and their parents in the US are asked to fill out complicated financial aid application forms. However, few studies...”

“...The paper of James Heckman is an extremely interesting survey of a huge literature on evaluation estimators with a special attention to matching estimation...”