Inflation targeting, credibility and confidence crises
We study the interplay between the central bank transparency, its credibility, and the ination target level. Based on a model developed in the spirit of the global games literature, we argue that whenever a weak central bank adopts a high degree of transparency and a low target level, a bad and self conrmed type of equilibrium may arise. In this case, an over-the-target ination becomes more likely. The central bank is considered weak when favorable state of nature is required for the target to be achieved. On the other hand, if a weak central bank opts for less ambitious goals, namely lower degree of transparency and higher target level, it may avoid condence crises and ensure a unique equilibrium for the expected ination. Moreover, even after ruling out the possibility of condence crises, less ambitious goals may be desirable in order to attain higher credibility and hence a better coordination of expectations. Conversely, a low target level and a high central bank transparency are desirable whenever the economy has strong fundamentals and the target can be fullled in many states of nature.
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