This paper investigates the determinants of private investment in Senegal over the period of 1970-2000. It first tests the variables for unit root using two, relatively, new tests namely the Dickey-Fuller generalised least square de-trending test proposed by Elliot et al. (1996) and the Ng-Perron test following Ng and Perron (2001). The long run private investment equation is derived using the ...

The paper presents a theory of the demand for money that combines a special case of the shopping time exchange economy with the cash-in-advance framework. The model predicts that both higher inflation and financial innovation that reduces the cost of credit induce agents to substitute away from money towards exchange credit. This results in an interest elasticity of money that rises with the in...

This paper deals with a critical assessment and a reestimation of the “non–accelerating inflation rate of unemployment” (NAIRU) for Germany. There are quite a few obstacles to perceiving the NAIRU as an understandable and easy–to–use analytical instrument, suitable for economic policy: the possibility of a non–vertical Phillips curve (e.g. in times of low inflation), the occurrence of shocks an...

This paper attempts to reconcile an apparent contradiction between short-run and long-run movements in the price of gold. A theoretical model is developed that suggests a set of the conditions that would have to be satisfied for the price of gold to rise over time at the general rate of inflation and hence be an effective long-run hedge against inflation. The model also demonstrates that short-...

With the introduction of the Euro, a single European money market has emerged. Further wholesale financial markets are considered to be highly integrated within the European Union. However, integration in retail financial markets is less advanced. For measuring financial market integration this distinction between wholesale and retail markets becomes crucial. There is a wide literature relating...

We modify a previously suggested GMM estimator in a spatial panel regression model by taking into account the difference between disturbances and regression residuals and derive its asymptotic properties. Simulation results and an empirical application to Indonesian rice data illustrate the improvement in finite samples. JEL Classification: C13, C21

Unemployment Persistence: How Important Are Non-Cognitive Skills? Using a random effects dynamic panel data model and the 2000-2008 waves of the German SOEP this paper shows that non-cognitive skills have a predictive power on unemployment transitions. JEL Classification: C33, J64

Analyzing a novel dataset we find significantly positive effects of basic, and applied and experimental knowledge stocks on domestic output and productivity for a panel of 10 OECD countries. This letter updates the work of, among others, Mansfield (1980), Griliches (1986) and Adams (1990), at an international setting. JEL Classification: F12: F2: O3.

In this paper, we propose new tests for threshold cointegration in the conditional autoregressive distributed lag (ADL) model. The indicators in the threshold model are based on either a nonstationary or stationary threshold variable. The proposed tests are appropriate when the conditioning variables are weakly exogenous. The cointegrating vector in this paper is not pre-specified. We adopt a s...