We determine the optimal policy to cope with information concealment in a hierarchy where a principal relies on a supervisor to obtain verifiable information about an agent's output. Depending on the information he has obtained, the informed supervisor may either collude with the agent or with...

The two episodes of food price surges in 2007 and 2011 have been particularly challenging for developing and emerging economies' central banks and have raised the question of how monetary authorities should react to such external relative price shocks. We develop a new-keynesian small...

This paper considers an infinite-horizon monetary economy with collateralized assets. A Central BanK lends money to households by creating short- and long-term loans. Households can deposit or borrow money on both short- and long-term maturity loans. If households want to sell a financial asset,...