Redukcjonizm w modelach neokeynesowskich

• Autorzy: Izabela Bludnik

Warianty tytułu

Reductionism in New Keynesian Models

• Języki publikacji: PL

Abstrakty

Program badawczy powstałego na początku lat 70. XX wieku neokeynesizmu został zdominowany przez poszukiwanie mikroekonomicznych uzasadnień dla poważnych, trwałych fluktuacji koniunktury. W tym celu neokeynesiści zaadaptowali, charakterystyczny dla modelu doskonałej konkurencji, redukcjonizm. Równocześnie w modelach neokeynesowskich mamy do czynienia z różnego rodzaju niedoskonałościami systemu, które ze swej istoty negują koncepcję jednostki reprezentatywnej. Wyprowadzanie wniosków zagregowanych przy pomocy prostej sumy (z założenia nieporównywalnych) pojedynczych wniosków, stanowi więc sprzeczność samą w sobie. Dzieląc teoretyczne konstrukcje neokeynesowskie na trzy grupy, a mianowicie: 1. modele niedoskonałej konkurencji oraz heterogeniczności podmiotów, dóbr i/lub transakcji, 2. modele heterogeniczności między homogenicznymi grupami podmiotów, 3. modele continuum homogenicznych podmiotów, pokazano, że zastosowanie metody redukcjonizmu wypacza istotę keynesizmu, pozbawiając go jego oryginalności i odrębności względem podejścia klasycznego. (abstrakt oryginalny)

EN

The research program of New Keynesianism as born in early 1970s was dominated by the search for microeconomic explanations of persistent business fluctuations. For this purpose New Keynesians applied reductionism characteristic of the model of perfect competition. Simultaneously, New Keynesian models reveal different systemic imperfections contradictory to the idea of representative agent. Simple aggregation of (incomparable by assumption) individual results seems to be an obvious paradox. New Keynesian theoretical constructions were divided into three groups: 1) imperfect competition models and heterogeneity of agents, goods and/or transactions; 2) models of heterogeneity between homogenous groups of agents; 3) models of continuum of homogenous agents. Against this background it was shown that reductionism misrepresented the core of Keynesian thought and deprived it of its originality and distinction as compared to the classical approach. (original abstract)

Słowa kluczowe

PL

Neokeynesizm; Teoria ekonomii; Modele ekonomiczne

EN

Neokeynesian; Economic theory; Economic models

• Czasopismo: Ekonomista
• Rocznik: 2009
• Numer: nr 6
• Strony: 761--774

Twórcy

autor

Izabela Bludnik

• Uniwersytet Ekonomiczny w Poznaniu

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