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Novo Modelo Keynesiano: uma aplicação empírica à economia da Zona €uro

Authors: Barradas, Ricardo Pereira;

Novo Modelo Keynesiano: uma aplicação empírica à economia da Zona €uro

Abstract

Esta dissertação tem como objectivo a aplicação empírica do Novo Modelo Keynesiano à economia da zona euro no período compreendido entre o primeiro trimestre de 1999 e o último trimestre de 2008, a qual surge em resposta à parca evidência empírica deste modelo dinâmico estocástico de equilíbrio geral aplicada ao caso concreto da União Económica Monetária. Em especial, proceder-se-á à estimação econométrica da curva IS, da curva de Phillips e da regra de Taylor para se aferir acerca da capacidade destas três equações descreverem a dinâmica da procura agregada e da taxa de inflação da zona euro, assim como da política monetária conduzida por parte do Banco Central Europeu (BCE) ao longo dos seus primeiros anos de existência. O Novo Modelo Keynesiano será estimado com recurso ao Método Generalizado dos Momentos ou Generalized Method of Moments (GMM), uma vez que as três equações denotam características híbridas, incluindo comportamentos do tipo retrospectivo ou backward looking e prospectivo ou forward looking por parte dos agentes económicos, bem como elementos com expectativas racionais, permitindo contornar também a forte possibilidade de existir endogeneidade entre as diferentes variáveis. Ainda que o método de estimação GMM possa apresentar algumas limitações, o Novo Modelo Keynesiano parece descrever razoavelmente bem a evolução da actividade económica, o nível geral de preços e a política monetária da zona euro, pelo que poderá assim constituir uma importante ferramenta de auxílio às autoridades governamentais e ao BCE na adopção e implementação das suas políticas ao longo do tempo.

This dissertation aims to be an empirical application of the New Keynesian Model to the euro area’s economy during the period from the first quarter of 1999 to the last quarter of 2008, which is consistent with the scant empirical evidence of this dynamic stochastic general equilibrium model applied to the particular case of the Economic Monetary Union. More specifically, we are going to proceed with an econometric estimation of the IS curve, the Phillips curve and the Taylor rule to judge about the ability of these three equations to describe the dynamics of the aggregate demand and the inflation in the euro area, as well as the monetary policy steering by the European Central Bank (ECB) during its early years. The New Keynesian model is estimated using the Generalized Method of Moments (GMM), since the three equations denote hybrid features, including backward looking and forward looking behaviors by the economic agents, and elements with rational expectations, allowing around also the strong possibility that there is endogeneity between the different variables. Although the GMM estimation method may present some limitations, the New Keynesian model seems to describe reasonably well the evolution of the economic activity, the general price level and the monetary policy in the eurozone. Against this backdrop, the New Keynesian Model may provide an important tool for aid the governments of the euro area’s countries and the ECB in the adoption and implementation of its policies over the time.

Country
Portugal
Keywords

Phillips Curve, Método Generalizado dos Momentos, Taylor Rule, Curva IS, União Económica Monetária, Generalized Method of Moments, IS Curve, European Central Bank, Curva de Phillips, New Keynesian Model, União Europeia. BCE Banco Central Europeu, Regra de Taylor, European Monetary Union, Novo Modelo Keynesiano

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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