We propose a novel procedure, built within a Generalized Method of Moments framework, which exploits unpaired observations (singletons) to increase the efficiency of longitudinal fixed effect estimates. The approach allows increasing estimation efficiency, while properly tackling the bias due to...

With the increased availability of longitudinal data, dynamic panel data models have become commonplace. Moreover, the properties of various estimators of such models are well known. However, we show that these estimators breakdown when the data are irregularly spaced along the time dimension....

Across many disciplines, the fixed effects estimator of linear panel data models is the default method to estimate causal effects with nonexperimental data that are not confounded by time-invariant, unit-specific heterogeneity. One feature of the fixed effects estimator, however, is often...

This paper examines the links between the internationalization mode of firms and market imperfections in product and labor markets. We develop a framework for modelling heterogeneity across firms in terms of (i) product market power (price-cost markups), (ii) labor market imperfections (workers'...

Korea imports all of its primary energy, which leads to high dependency and vulnerability related to its energy supply. Efficiency in the use of energy is a way to reduce dependency and emissions. This study provides empirical results of the stochastic production process in energy use. Special...

The rapid growth and high levels of internationalization by Chinese firms, raise a natural interest in the study of the factors which have led the notable international presence of Chinese firms. To contribute to this effort, we use data from the 2008-10 survey of China's High-tech firms,...

This paper analyzes the relationship between gender and corruption, controlling for country-specific heterogeneity in a panel framework. Using annual observations in a pooled setting (no country-fixed effects) confirms the positive link between the involvement of women in society and the absence...

Similar to other workers in industrial settings NFL running backs can choose to provide additional work effort with possible negative health consequences. We find that the most informative measure for running backs is yards gained after contact, which not only increases total rushing yards but...

Globally installed wind power capacity has grown tremendously since 2000. This study focuses on the local economic impacts of wind power deployment. A theoretical model shows that wind power deployment is not necessarily driven by locally-accruing economic payoffs, but also by other factors such...