Ensaios sobre inflação e política monetária

• Ano de defesa: 2008
• Autor(a) principal: Nunes, Clemens V. de Azevedo
• Orientador(a): Brito, Márcio Holland de
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Inflação; Custo marginal real; Política monetária; Curva de Phillips; Sinalização em política monetária; Estrutura a termo de juros; Curva de Phillips novo-keynesiana
• Link de acesso: http://hdl.handle.net/10438/1774

This thesis aims to analyze the relationship between economic activity and inflation in the short term regarding three important issues: an historical perspective of the relationship between economic activity and inflation; the analysis of the inflation dynamics of the Brazilian economy, through a microfoundations based model, the New Keynesian Phillips curve; finally, the evaluation of the signaling mechanisms used by the Brazilian Central Bank, through the study of the impact of the changes of the overnight rate (Selic) on the term structure of interest rates. The core element relating the three essays is the need for the policy maker to understand the significant of short term policy actions on the real economy to achieve the main objective of promoting economic growth with low inflation. Our analysis support the finding that the New Keynesian model is a valuable tool to study the relationship between economic activity and inflation, which incorporates contributions from the classical economists to date. A version of the New Keynesian model is used to describe the Brazilian inflationary dynamics with reasonable results, providing assessment of the nominal rigidities in the economy in line with those observed in practice. Finally, we evaluate the current development stage of the inflation targeting system, by studying the degree that the market anticipates Brazilian Central Bank actions through the impact of the changes of the overnight rate on the term structure of interest rates. The estimations were made for two samples, the first from 2000 to 2003, and the second, from 2003 to 2008. The results show an increasing anticipation of Central Bank actions by market participants. The explanation for this fact could be related to the gradual learning of the Central Bank reaction function by the public, a lower volatility in the economy in the latter period, and the improvement of signaling mechanisms by the Central Bank. The surprise effect in the local term structure is then compared with other economies which have also adopted practices to increase transparency of central bank actions. The results show that the surprise effect in interest rates have decreased substantially in the latter period, achieving the levels of Germany and United States in the period from 1990-1997, and smaller than Italy and United Kingdom.