Publications in Refereed Journals

Testing Out-of-Sample Portfolio Performance, 2018, International Journal of
Forecasting, with Ekaterina Kazak, forthcoming.

What Determines Forecasters' Forecasting Errors?, 2019, International Journal

of Forecasting, 35, 11 - 24, with Ingmar and Sandra Nolte, DOI:

A Note on the Regularized Approach to Biased 2SLS Estimation with Weak Instruments

, 2016, Oxford Bulletin of Economics & Statistics, 78, 915 - 924, with Namhyun Kim, DOI:

Simple and Successful Shrinkage Method for Weighting Estimators of Treatment Effects

, 2014, Computational Statistics and Data Analysis, 100, 512-525, with D. Uysal and R. Seiberlich, DOI:

Improving the Value at Risk Forecasts: Theory and Evidence from the Financial Crisis

, 2012, Journal Economic Dynamics and Control, 36, 1212-1236, with R. Halbleib, DOI:

An Inated Multivariate Integer Count Hurdle Model: An Application Bid Ask Quote Dynamics

, 2011, Journal of Applied Econometrics, 26, 669-707, with K. Bien and I. Nolte, DOI:

Unemployment Duration and Personality Traits

, 2011, Journal of Economic Psychology, 32, 980-992, with D. Uysal, DOI:

Combining Survey Forecasts and Time Series Models: The Case of the Euribor, 2011, Jahrbücher für Nationalökonomie und Statistik (Journal of Economics and Statistics), 231, 63-81, with F. Krüger and F. Mokinski.

Causal Returns to Schooling and Individual Heterogeneity, 2011, Review of Economic & Business Studies, 4, 29-41, with F. Pfeiffer.

Microeconometrics and Disclosure Control

, 2008, Advances in Statistical Analysis, 92, 351-357, with G. Ronning, DOI:

Bicameral Conflict Resolution: An Empirical Analysis of Conciliation Committee Bargains in the European Union, 2007, British Journal of Political Science, 37, 281-312, with B. Lindberg, T. König and S. Lechner.

Using Forecasts of Forecasters to Forecast, 2007, International Journal of Forecasting, 23, 15-28, with I. Nolte.

Causal Returns to Education: A Survey in Empirical Evidence for Germany, 2006, Jahrbücher für Nationalökonomie und Statistik (Journal of Economics and Statistics), 226, 6-23, with A. L. Flossmann.

Modelling Financial Transaction Price Movements: A Dynamic Integer Count Data Model, 2006, Empirical Economics, 30, 795-825, with R. Liesenfeld and I. Nolte.

Data Masking by Noise Addition and the Estimation of Nonparametric Regression Models, 2005, Jahrbücher für Nationalökonomie und Statistik (Journal of Economics and Statistics), 225, 517-528, with S. Lechner.

Econometric Analysis of Financial Transaction Data: Pitfalls and Opportunities, 2002, Allgemeines Statistisches Archiv (General Statistical Archive), 86, 5-30, with N. Hautsch.

Zur Wirkung des technischen Fortschritts auf die Qualifikationsstruktur der Beschäftigung und die Entlohnung (On the Impact of Technical Progress on the Qualification Structure of Employment and Wages), 1999, Zeitschrift für Nationalökonomie und Statistik (Journal of Economics and Statistics), 219, 90-118, with S. Klotz and F. Pfeiffer.

An Econometric Model of the Two-Part Decision Process in the Demand for Health, 1995, Journal of Human Resources, 30, 339-361, with V. Ulrich.

Tax Illusion and Labour Supply of Married Women: Evidence from German Data, 1995, Kyklos, 48, 347-368, with H. König, F. Laisney and M. Lechner.

Panelökonometrische Modelle für Zähldaten: Einige neuere Schätzverfahren (Panel Econometric Models for Count Data: Some New Estimation Methods), 1994, Schweizerische Zeitschrift für Volkswirtschaft und Statistik (Swiss Journal of Economics and Statistics), 130, 553-574.

Innovative Activity and Firm Heterogeneity: Empirical Evidence from West Germany, 1992, Structural Change and Economic Dynamics, 3, 301-320, with F. Laisney and M. Lechner.

Semi-Nonparametric Estimation of Binary Choice Models Using Panel Data: An Application to the Innovative Activity of German Firms, 1992, Recherches Economiques de Louvain (Economics Research of Leuven), 58, 329-347, with F. Laisney and M. Lechner.

Income, Uncertainty and the Probability of Self-Employment, 1992, Recherches Economiques de Louvain (Economics Research of Leuven), 58, 265-282, with F. Pfeiffer.

Labor Utilization and Nonwage Labor Costs in a Disequilibrium Macro Framework, 1992, Scandinavian Journal of Economics, 94, 71-83, with H. Entorf and H. König.

On the Simultaneity of Innovation Activity and Market Structures, 1992, Empirical Economics, 19, 253-272.

Determinanten des Gesundheitszustandes: Ein empirischer Ansatz zur Outputmessung im Gesundheitswesen bei partieller Information (Determinants of Health: An Empirical Approach to Measuring Output in the Health Care System with Partial Information), 1992, Zeitschrift für Wirtschafts- und Sozialwissenschaften, 112, 219-238, with V. Ulrich.

Worksharing and Factor Prices: A Comparison of Three Flexible Functional Forms for Nonlinear Cost Schemes, 1989, Journal of Institutional and Theoretical Economics, 145, 343-357, with H. König.

Employment, Labour Utilization, and Procyclical Labour Productivity, 1988, Kyklos, 41, 551-572, with H. König.