We characterize the restrictions imposed by the minimal I(2)-to-I(1) transformation that underlies much applied work, e.g. on money demand relationships or open-economy pricing relationships. The relationship between the parameters of the original I(2) vector autoregression, including the...

Nominal-to-real data transformations are routinely used in empirical work. A common example is the transformation of nominal money and prices to real money and the rate of inflation. This paper establishes the necessary and sufficient condition for a transformation to reduce the order of...

We analyze the extent to which visits to a magazine's companion website affects total circulation, subscription, kiosk sales and foreign sales using Granger causality tests on the basis of monthly data for the German magazine market spanning the period January 1998 to September 2005. We find...

Previous work on board size effects in closely held corporations has established a negative correlation between board size and firm performance. We argue that this work has been incomplete in analysing the causal relationship due to lack of ownership information and weak identification...

Boards are endogenously chosen institutions determined by observable and unobservable firm characteristics. Empirical studies of large publicly traded firms have successfully controlled for observable determinants of board size and shown a robust negative relationship between board size and firm...

Empirical studies of large publicly traded firms have shown a robust negative relationship between board size and firm performance. The evidence on small and medium-sized firms is less clear; we show that existing work has been incomplete in analyzing the causal relationship due to weak...

This article analyzes trade policy dynamics when there are sunk costs of entry and demand uncertainty. A natural generalization of the classic export tax prescription for a domestic industry facing downward-sloping foreign demand is defined and implemented as a dynamic competitive equilibrium...

The authors analyzed the relationship of visits to a magazine's online companion website and total circulation, subscription, and kiosk sales using bivariate vector autoregressions estimated on 67 German magazines that were observed monthly in the period May 1998 to November 2009. Their...

We estimate the relative contribution of mobile scientists who leave academia for the private sector on the subsequent innovative performance of the firms they join. We use data on the population of Danish firms and their R&D workers for the period 1999-2004 and measure innovation performance by...