This article is our personal perspective on the IPS test and the subsequent developments of unit root and cointegration tests in dynamic panels with and without cross-section dependence. In this note, we discuss the main idea behind the test and the publication process that led to Im, Pesaran...

Under correlated heterogeneity, the commonly used two-way fixed effects estimator is biased and can lead to misleading inference. This paper proposes a new trimmed mean group (TMG) estimator which is consistent at the irregular rate of n 1/3 even if the time dimension of the panel is as small as...

This study examines the effects of the tax structure composition for public sector efficiency in a sample of 41 developing countries for the period between 1997-2019. We start by calculating Public Sector Performance (PSP) composite indicators and use them as outputs to compute data envelopment...

Economic freedom and economic growth can be connected in most countries, but it is often necessary to specify those aspects of economic freedom that can foster economic growth. This paper examines the nexus between economic freedom and economic growth in the Least Developed Countries (LDCs)...

We nest an extended two-way fixed effect (ETWFE) estimator for staggered difference-in-differences within the structural gravity model. To test the ETWFE, we estimate the effects of regional trade agreements (RTAs). The results suggest that RTA estimates in the current gravity literature may be...

This study investigates the causal impact of Italy’s transition from analog to digital terrestrial television on fertility rates, exploiting the staggered rollout between 2008 and 2012 as a natural experiment. Employing a difference-in-differences analysis and a doubly robust estimator, I find...

Regression analysis using panel data for 42 colleges and universities over 14 years suggests that the economics faculty size of universities offering a Ph.D. in economics is determined primarily by the long-run average number of Ph.D. degrees awarded annually; the number of full-time faculty...

This paper provides a method for the analysis of the spatial and temporal diffusion of shocks in a dynamic system. We use changes in real house prices within the UK economy at the level of regions to illustrate its use. Adjustment to shocks involves both a region specific and a spatial effect....

In 2004, a section was added to the German Protection against Dismissal Act, establishing a new procedure to dismiss an employee, given a predetermined severance payment. Most legal scholars presume the change to be without impact, while a minority of experts claims it to be either beneficial or...

This paper presents a micro data approach to the identification of credit crunches. Using a survey among German firms which regularly queries the firms' assessment of the current willingness of banks to extend credit we estimate the probability of a restrictive credit supply policy by time...