Do experts adjust their policy recommendations when the facts change? We conduct a large-scale randomized experiment among 1,224 economic experts across 109 countries that includes two treatments. The first treatment is the geographic and temporal variation in the initial spread of Covid-19...

My empirical results in Potrafke (2012) confirm past conclusions that Muslim-majority countries are less likely to be democratic. Hanusch takes issue with my results - and by inference with all past empirical results on the relation between Islam and democracy. In his comment on my study,...

Using a representative survey of German university students, we confirm that proclaimed support for environment protection policies depends on socio-cultural factors and political ideology. Unlike most related studies for other countries, we find that the environmental policy stance of German...

I examine the extent to which public sector outsourcing relates to public employment in OECD countries. I use new panel data on public sector outsourcing. The sample includes 26 countries over the period 2009-2015. Contrary to common expectations, the results do not suggest that public sector...

Scholars have been active in investigating causes and consequences of austerity policies. We examine how economists use the term "austerity" in scientific studies and measure austerity in empirical analyses. The sample includes around 3,500 journal articles published in the top 400 journals...

We examine whether changes of government influence compliance with international agreements. We investigate compliance with the NATO two percent target to which all NATO countries committed themselves during the NATO summit in Wales in 2014. The dataset includes the military expenditure by NATO...

In many European countries established leftwing and rightwing parties have been threatened by policy convergence and, in turn, new populist parties that offer more polarized platforms. I investigate whether government ideology influences dragnet-controls - controls of persons conducted by the...

Higher economic growth was generated during Democratic presidencies compared to Republican presidencies in the United States. The question is why. Blinder and Watson (2016) explain that the Democratic-Republican presidential growth gap (D-R growth gap) can hardly be attributed to the policies...

In 2006, the reform of the German fiscal constitution realigned legislative powers between the federal and the state governments. Since 2007, the German state governments have been allowed to design real estate transfer tax rates. We investigate whether government ideology predicts the levels...

We examine whether parties punish politicians who vote against the party line in roll-call votes. Using data of German members of parliament over the legislative period 2009-2013, we take into account that the effect of punishment differs along the list of candidates because a candidate is...