In many healthcare markets, physicians can influence the volume (volume response) and the composition of the services provided (substitution response). The goal and main contribution of this paper is to empirically assess the relative importance of these two behavioral channels. Our analysis is...

We investigate how politico-economic factors shaped government responses to the spread of COVID-19. Our simple framework uses epidemiological, economic and politico-economic arguments. Confronting the theory with US state level data we find strong evidence for partisanship even when we control...

We develop a flexible single-state model to represent tradeoffs between infections and activity during the early phase of an epidemic. We prove that optimal policy is continuous in the state but discontinuous in the deterministic arrival date of a cure; optimal lockdowns are followed by stimulus...