The authors propose a short run model for the monetary transmission mechanism in which the output gap is modelled as an unobserved variable. By estimating this model using maximum likelihood on a Kalman Filter, the authors find an estimate of the unobserved output gap as well as its estimation...

Sudden stops seem to create the perfect environment for disinflation, especially when central banks defend the exchange rate by increasing interest rates. We propose a variation of the output gap model that incorporates the sudden stop shock. The use of the model in policy analysis shows that...

The paper provides a model of the banking firm in the macroeconomy intended to explain what determines the interest rate spread. A key factor explaining the spread in our model is the resource cost of capital. A statistical result confirms the prediction of the model, that is, the bank's spread...

As originally drawn and estimated by professor Phillips, the Phillips curve is a curve indeed, not a straight line as often thought. Following Laxton, et. al. (1999) we estimate a convex Phillips curve and model the NAIRU as a variable that is unobserved. Using Colombian data, we provide...

Explicit inflation targets have existed in Colombia since the early nineties1 . The Colombian authorities announced a quantitative in‡ation target for the first time in 1991. The announcement was made by the Minister of Finance, at a time when there was no clear distinction between the tasks...

Colombia has been on a steady disinflation path since the early 1990s. In this paper, we model the transmission mechanism of monetary policy during this disinflation. We describe how inflation evolves in response to important shocks that occurred during disinflation such as the terms of trade...