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handle: 10400.5/2824
Desde a publicação da "Teoria Geral" de J. M. Keynes que o estudo daquilo a que se convencionou chamar "rigidez nominal", tem vindo a ocupar um lugar de destaque na teoria macroeconómica. Esta tese tem por objectivo o estudo das consequências macroeconómicas da existência de custos inerentes à alteração dos preços, numa situação de monopólio quer no mercado do produto, quer no mercado de trabalho. Na primeira parte, pretende-se dar uma fundamentação microeconómica, com base na existência de menu costs, para o facto de os agentes - neste caso uma empresa e uma família - nem sempre responderem a estímulos externos com alterações dos preços anunciados para os bens que fornecem. Na segunda parte, são analisados os equilíbrios macroeconómicos resultantes bem como as alterações que neste se verificam, decorrentes de modificações registadas na política económica, na envolvente internacional, choques externos ao modelo ou nas expectativas dos agentes.
Since J. M. Keynes' "General Theory" came out, "nominal rigidity" has been a main issue in macroeconomic research. The present work studies the macroeconomic effects of the costs of changing posted prices, under monopoly both in good and labour markets. First, we present a microeconomic foundation, based on the existence of menu costs, that agents - in this case one firm and one family - do not always change their announced prices in the presence of external shocks. Then, we analyse the resultant macroeconomic equilibria and how they are affected by changes in economic policy, international environment, external shocks or in the agent's expectations.
Mestrado em Economia
Menu Costs, Rigidez Nominal, Equilibrium, Nominal Rigidity, Equilíbrio, Rationality, Racionalidade
Menu Costs, Rigidez Nominal, Equilibrium, Nominal Rigidity, Equilíbrio, Rationality, Racionalidade
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