Heterogeneous beliefs among market participants can lead to questionable speculative trading that goes beyond any risk-sharing motives. We demonstrate that such unwarranted betting behavior in market equilibrium can be mitigated by introducing nonlinear pricing for ambiguous contracts, without...

We leverage decades of administrative data and quasi-experimental variation in the introduction of universal long-term care (LTC) insurance in Germany in 1995 to examine whether health insurance expansions can stimulate local economies. We find that the LTC insurance rollout led not only to...

Does it pay to invest in green companies? In countries where a market for carbon is functioning, such as those within the European Union, our findings suggest that it should be beneficial. Using a sample of green and brown European firms, we initially demonstrate that green companies have...

This paper characterizes equilibrium properties of a broad class of economic models that al-low multiple heterogeneous agents to interact in heterogeneous manners across several markets. Our key contribution is a new theorem providing sufficient conditions for uniqueness and stability of...

Welfare economics relies on access to agents' utility functions: we revisit classical questions in welfare economics, assuming access to data on agents' past choices instead of their utilities. Our main result considers the existence of utilities that render a given allocation Pareto optimal. We...

This paper revisits paradigmatic differences in economics with a focus on input-output modeling. We show that such differences represent deep divides in economic theorizing and impact strongly on the magnitude and signs of expected effects. At the same time estimates from input-output models are...

This paper revisits paradigmatic differences in economics with a focus on input-output modeling. We show that such differences represent deep divides in economic theorizing and impact strongly on the magnitude and signs of expected effects. At the same time estimates from input-output models are...