We show that professional soccer players exhibit reference-dependent behavior during matches. Controlling for the state of the match and for unobserved heterogeneity, we show on a minute-by-minute basis that a player breaches the rules of the game, measured by the referee's assignment of cards,...

Recent evidence suggests that self-regulation plays an important role for labor market success. We conducted a randomized natural field experiment embedded in an existing labor market reactivation program to examine the effect of a self-regulation training on long-term unemployed individuals....

For policy reforms to increase a society's welfare, reliable information on people's prefer-ences and expectations is crucial. Representative opinion polls, often involving simplified questions about the complex topics under debate, are an important source of information for both policy-makers...