This paper develops a model of sovereign debt where governments are myopic. Instead of focusing on the incentives to repay, as in most of the theoretical literature on the topic (which assumes implicitly that governments have long-term objectives), I therefore consider that governments always...

Speculative industries exploit novel technologies subject to two risks. First, there is uncertainty about the fundamental value of the innovation: is it strong or fragile? Second, it is difficult to monitor managers, which creates moral hazard. Because of moral hazard, managers earn agency rents...

We build a model of credit card pricing that explicitly takes into account credit functionality. We show that a monopoly card network always selects an interchange fee that exceeds the level that maximizes consumer surplus. If regulators only care about consumer surplus, a conservative...