Measurement of both federalism and decentralization has been contentious. We introduce three new indicators reflecting important aspects of both federalism and decentralization. The three new indicators are the result of principal component analysis. When we try to identify their main...

This study examines the effect of formal institutions, specifically constitutional provisions, on minority discrimination in Muslim societies. We hypothesize that those Muslim countries in which (political) Islam constitutes an important constraint in the legislative process experience more...

Over the last decades, more and more countries have integrated environmental protection into their constitution. In this article, we argue that a simple economic model can explain why some countries have adopted the legal innovation of constitutional environmental protection, while others have...

Constitutional loyalty, the importance ascribed to complying with constitutional rules, is difficult to measure across countries due to differences in context, history, and culture. We overcome this challenge by exploiting the COVID-19 pandemic as an ideal setting in which societies around the...

Since the time of the Protestant reformation, Western societies typically consider themselves not to be governed by divine law but based on a social contract. While all rules governing a society are part of this social contract, a country's written constitution is a central and possibly the most...

This article introduces a novel database that measures governments’ compliance with national constitutions. It combines information on de jure constitutional rules with data on their de facto implementation. The individual compliance indicators can be grouped into four categories that we...

Measurement of both federalism and decentralization has been contentious. We introduce three new indicators reflecting important aspects of both federalism and decentralization. The three new indicators are the result of principal component analysis. When we try to identify their main...

Constitutional democracy is in decline and many would-be autocrats try to elude constitutional constraints or even to exploit constitutions in their favor. We make a number of proposals for designing constitutions that are more resilient against such attempts. A first look at the empirical...