This paper merges two isolated bodies of literature: the Markov chain model with macro data (MacRae, 1977) and the ecological inference model (Robinson, 1950). Both are choice models. They have the same likelihood function and the same regression equation.Decades ago, this likelihood function...

This paper discusses a widely used discrete-time analog of dynamic continuous-time models. This analog can not be used for the estimation of models with fast adaption to shocks. This has been overlooked in the econometric literature. In the engineering literature this same analogon is defined,...

This paper investigates the effects of education vouchers for teachers. We study effects on enrollment and completion of higher education programs, and on the retention of teachers in the education sector. We do this by exploiting a fuzzy regression discontinuity design. Read also the...

Distributed Denial of Service (DDoS) attacks are a frequently occurring type of cybercrime, with potentially large costs to the real economy. We propose a simple model of the size and direction of DDoS attacks. The main predictions of the model are that effective botnets are located in...

A consequence of melting Arctic ice caps is the commercial viability of the Northern Sea Route, connecting North-East Asia with North-Western Europe. This will represent a sizeable reduction in shipping distances and a decrease in the average transportation days by around one-third compared to...

The authors investigate the effectiveness and efficiency of alternative measures to increase standards in low-income countries. They do this in a two-country framework where (a) trade and standards in low-income countries are negatively related, and (b) free trade is no longer optimal for the...