Vulnerability of exchange rates to the external price shocks as well as their absorption capabilities represents one of the most discussed area in the fixed versus flexible exchange rate dilemma. Ability of exchange rates to serve as a traditional vehicle for a transmission of external shocks to...

We propose a new theory of price rigidity based on firms' Knightian uncertainty about their competitive environment. This uncertainty has two key implications. First, firms learn about the shape of their demand function from past observations of quantities sold. This learning gives rise to kinks...

Price rigidity is central to many predictions of modern macroeconomic models, yet, standard models are at odds with certain robust empirical facts from micro price datasets. We propose a new, parsimonious theory of price rigidity, built around the idea of demand uncertainty, that is consistent...