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...

In this paper we investigate the dynamic adjustment of labour and capital in German and Dutch firms. The Dutch labour market is characterised by greater flexibility in wages and work arrangements in comparison to Germany. These institutional differences imply that employment dynamics in the two...

In this paper we investigate the dynamic adjustment of labour and capital in German and Dutch firms. The Dutch labour market is characterised by greater flexibility in wages and work arrangements in comparison to Germany. These institutional differences imply that employment dynamics in the two...

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...

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....

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....

This paper presents a convenient shortcut method for implementing the Heckman estimator of the dynamic random effects probit model using standard software. It then compares the three estimators proposed by Heckman, Orme and Wooldridge based on three alternative approximations, first in an...

The Great Chinese Famine of 1959-1961 is puzzling, since despite the high death rates, there is no discernable diminution in height amongst the majority of cohorts who were exposed to the famine in crucial growth years. An explanation is that shorter children experienced greater mortality and...