Narrow search
Showing 1 - 10 of 67
Cover Image
The euro's trade effect under cross-sectional heterogeneity and stochastic resistance
Herwartz, Helmut; Weber, Henning - 2010
This paper investigates if the euro's effect on euro-area trade differs across trade sectors and across country pairs …, and to what degree heterogeneity matters for estimating the aggregate euro effect. Time-varying latent variables, which …, aggregate exports within the euro area increase between 2000 and 2002 by 15 to 25 percent compared with aggregate exports …
Persistent link: https://www.econbiz.de/10010270031
Cover Image
Testing directional forecast value in the presence of serial correlation
Blaskowitz, Oliver J.; Herwartz, Helmut - 2008
Common approaches to test for the economic value of directional forecasts are based on the classical Chi-square test for independence, Fisher’s exact test or the Pesaran and Timmerman (1992) test for market timing. These tests are asymptotically valid for serially independent observations....
Persistent link: https://www.econbiz.de/10010271838
Cover Image
Testing for Causality in Variance using Multivariate GARCH Models
Hafner, Christian M.; Herwartz, Helmut - 2004
Tests of causality in variance in multiple time series have been proposed recently, based on residuals of estimated univariate models. Although such tests are applied frequently little is known about their power properties. In this paper we show that a convenient alternative to residual based...
Persistent link: https://www.econbiz.de/10010296228
Cover Image
A robust bootstrap approach to the Hausman test in stationary panel data models
Herwartz, Helmut; Neumann, Michael H. - 2007
In panel data econometrics the Hausman test is of central importance to select an e?cient estimator of the models' slope parameters. When testing the null hypothesis of no correlation between unobserved heterogeneity and observable explanatory variables by means of the Hausman test model...
Persistent link: https://www.econbiz.de/10010296293
Cover Image
Exact inference in diagnosing value-at-risk estimates: A Monte Carlo device
Herwartz, Helmut - 2008
In this note a Monte Carlo approach is suggested to determine critical values for diagnostic tests of Value-at-Risk models that rely on binary random variables. Monte Carlo testing offers exact significance levels in finite samples. Conditional on exact critical values the dynamic quantile test...
Persistent link: https://www.econbiz.de/10010298764
Cover Image
When, how fast and by how much do trade costs change in the euro area?
Herwartz, Helmut; Weber, Henning - 2008
Microfoundations of the euro's effect on euro area trade hinge on the timing, the speed and the size of adjustment in … at the sector level. We find that, due to falling trade costs, trade within the euro area increases between the years … 2000 and 2003 by 10 to 20 percent compared with trade between European countries that are not members of the euro area …
Persistent link: https://www.econbiz.de/10010298765
Cover Image
When, how fast and by how much do trade costs change in the euro area?
Weber, Henning; Herwartz, Helmut - 2008
Microfoundations of the euro's effect on euro area trade hinge on the timing, the speed and the size of adjustment in … at the sector level. We find that, due to falling trade costs, trade within the euro area increases between the years … 2000 and 2003 by 10 to 20 percent compared with trade between European countries that are not members of the euro area …
Persistent link: https://www.econbiz.de/10010299149
Cover Image
When, how fast and by how much do trade costs change in the Euro area?
Herwartz, Helmut; Weber, Henning - 2008
Microfoundations of the euro's effect on euro area trade hinge on the timing, the speed and the size of adjustment in … at the sector level. We find that, due to falling trade costs, trade within the euro area increases between the years … 2000 and 2003 by 10 to 20 percent compared with trade between European countries that are not members of the euro area …
Persistent link: https://www.econbiz.de/10010331062
Cover Image
German Works Councils in the Production Process
Addison, John T.; Schank, Thorsten; Schnabel, Claus; … - 2003
In a sharp break with past German research, some recent estimates have suggested that plants with work councils have 25 to 30 per cent higher productivity than their works-councilfree counterparts. Such findings can only serve to buttress the strong theoretical and policy interest in the German...
Persistent link: https://www.econbiz.de/10010261548
Cover Image
Exporting Firms Do Not Pay Higher Wages, Ceteris Paribus : First Evidence from Linked Employer-Employee Data
Wagner, Joachim; Schnabel, Claus; Schank, Thorsten - 2004
18 studies using data from 20 highly developed, developing, and less developed countries document that average wages in exporting firms are higher than in non-exporting firms from the same industry and region. The existence of these so-called exporter wage premia is one of the stylized facts...
Persistent link: https://www.econbiz.de/10010261930