In this paper we explore the impact of imperfectly competitive input markets on production function estimation. First order profit maximizing conditions are altered when frictions in input markets cause the elasticity of input supply to the firm to be finite. A consequence of this is that the...

Präferenzen für Gütervielfalt und hieraus resultierende heterogene Preisbildung auf unvollkommenen Gütermärkten werden in empirischen Produktivitätsuntersuchungen bislang nur unzureichend berücksichtigt. Der vorliegende Beitrag möchte zur Schließung dieser Forschungslücke beitragen: Er...

Shareholder class action litigation most often deals with allegations that defendants made misrepresentations and/or omissions that caused the stock price to be higher than it otherwise would have been. We show how regression analysis of the response of share prices and investor expectations to...

In self-reported data usually a phenomenon called 'heaping' occurs, i.e. survey participants round the values of their income, weight or height to some degree. Additionally, respondents may be more prone to round off or up due to social desirability. By ignoring the heaping process a severe bias...

In this paper we investigate panel regression models with interactive fixed effects. We propose two new estimation methods that are based on minimizing convex objective functions. The first method minimizes the sum of squared residuals with a nuclear (trace) norm regularization. The second...

In certain circumstances, both researchers and policy makers are faced with the challenge of determining individual efficiency scores for each decision making unit (DMU) under consideration. In this study, we use a Monte Carlo experimentation to analyze the optimal approach to determining...