Modele reprezentatywnych podmiotów gospodarczych jako narzędzie analizy w nowej syntezie neoklasycznej

• Autorzy: Przemysław Włodarczyk

Warianty tytułu

Representative Agents' Models as a Method of Analysis of the New Neoclassical Synthesis

• Języki publikacji: PL

Abstrakty

W opracowaniu omówiono główne rodzaje modeli reprezentatywnych podmiotów gospodarczych, wykorzystywane przez przedstawicieli nowej szkoły keynesowskiej, w szczególności nowej syntezy neoklasycznej. Pozwoliło to na ocenę warunków, których przyjęcie jest konieczne do wyznaczenia rozwiązania tych modeli. Analizie poddano modele oparte na koncepcji konkurencji monopolistycznej Dixita-Stiglitza, nieuwzględniające sztywności cen nominalnych. Wprowadzono kilka prostych założeń umożliwiających agregację i w stosunkowo niewielkim stopniu ograniczających heterogeniczność podmiotów gospodarczych. Doprowadziło to do uzyskania modelu równowagi ogólnej, którego rozwiązanie na poziomie agregatowym będzie takie samo jak to, które uzyskalibyśmy w wyniku rozwiązania problemów optymalizacyjnych każdego z analizowanych podmiotów z osobna. W odniesieniu do modeli uwzględniających sztywność cen i płac stwierdzono, że zastosowane metody, przede wszystkim mechanizm sztywności cen Calvo oraz analogiczny do niego mechanizm sztywności płac Ercega, Hendersona i Levina, sprawiają, iż mogą one być rozwiązane jedynie przy założeniu istnienia tzw. równowagi symetrycznej. (abstrakt oryginalny)

EN

The article characterizes the main types of representative agents' models used by the economists belonging to the New Keynesian school of economic thought, and especially to its New Neoclassical Synthesis branch. It allows the assessment of conditions, the adoption of which is necessary in order to determine the solutions of these models. Undertaken analyses show that in the case of the models based on Dixit-Stiglitz monopolistic competition, which do not include nominal price rigidities, introduction of several simple assumptions which enable aggregation and introduce relatively weak constraints on the heterogeneity of economic entities, enables us to obtain the general equilibrium model that might be solved at an aggregate level as if it was solved at the decentralized level. In the case of models allowing for price and wage rigidities, it is shown that the Calvo formalism (and the corresponding Erceg-Henderson-Levin formalism) results in the necessity of introducing the assumption of the so-called symmetric equilibrium. (original abstract)

Słowa kluczowe

PL

Podmioty gospodarcze; Procesy gospodarcze; Analiza ekonomiczna; Obliczeniowy model równowagi ogólnej

EN

Business entity; Economic process; Economic analysis; Computable General Equilibrium model (CGE)

• Czasopismo: Bank i Kredyt
• Rocznik: 2016
• Numer: nr 6
• Strony: 553--584

Twórcy

autor

Przemysław Włodarczyk

• Uniwersytet Łódzki

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