European countries are becoming increasingly politically integrated and the process of integration has accelerated in recent years. But how much social integration is there within the Community? This article supplies a definition of European social integration, and thereby lays down the...

Over the last two decades there has been a growing debate on the supposedly negative relation between ethnic diversity, public goods production and social cohesion. Despite the amount of evidence, existing in-depth qualitative reviews conclude that the literature is inconclusive. Advancing upon...

Ethnic diversity is typically measured by the well-known Hirschman-Herfindahl Index. This paper discusses the merits of an alternative approach, which is in our view better suited to tease out why and how ethnic diversity matters. The approach consists of two elements. First, all existing...

The question whether ethnic diversity is associated with declining social cohesion has produced much controversy. We maintain that more attention must be paid to cognitive mechanisms to move the debate ahead. Using survey data from 938 localities in Germany, France, and the Netherlands, we...

In school choice problems, the widely used manipulable Immediate Acceptance mechanism (IA) disadvantages unsophisticated applicants, but may ex-ante Pareto dominate any strategy-proof alternative. In these cases, it may be preferable to aid applicants within IA, rather than to abandon it. In a...

This paper investigates the role self-confidence plays in college applications. Using incentivized experiments, we measure the self-confidence of more than 2,000 students applying to colleges in France. This data reveals that the best female and low-SES students significantly underestimate their...

We investigate fairness preferences in matching mechanisms using a spectator design. Participants choose between the Boston mechanism or the serial dictatorship mechanism (SD) played by others. In our setup, the Boston mechanism generates justified envy, while the strategy-proof SD ensures...

This discussion paper describes the extent of social inequalities both within and between the countries of the European Union. In the first three chapters we address the micro level of individual life courses: education, employment and income. The following chapters analyse the societal...

Ambition as the desire for personal achievement is an important driver of behavior. Using laboratory experiments, we study the role of social influence on ambition in two distinct domains of achievement, namely performance goals and task complexity. In the first case, participants set themselves...

The use of lotteries is advocated to desegregate schools. We study lottery quotas embedded in the two most common school choice mechanisms, namely deferred and immediate acceptance mechanisms. Some seats are allocated based on merit (e.g., grades) and some based on lottery draws. We focus on the...