We analyze households' responses to an unanticipated change in consumption opportunities and evaluate their implications for the nature and formation of preferences. We study the tariff experiment conducted by South Central Bell where local telephone tariffs were introduced for the first time in...

In this paper we present a counterfactual evaluation of the effect of ICT resources at school on student achievements conducted in Italy. In 2009 156 classes at 6th grade were endowed with additional resources earmarked for purchasing ICT equipments only. By selecting an equivalent number of...