Yeni Keynesyen İktisat mı, Yeni Neo-Klasik Sentez mi?

Yıl 2007, Sayı: 13, 22 - 36, 01.06.2007

Tahir Büyükakın

Öz

Yeni Keynesyenler, Keynesyen iktisadı tekrar hayata döndürmeye çalışan yaklaşımlardan biridir. Bu amaçla Keynesyen makro iktisadın mikro temellerini inşa etmeye çalışmışlardır. Bu çerçevede çalışmalarında nominal fiyatlar ve ücretlerdeki yapışkanlıklar ile eksik bilgi ve piyasa başarısızlığı konularını vurgulamışlardır. Böylece, özel sektör ajanları rasyonel beklentilere sahip olsa ve para arzındaki değişmeleri öngörse bile, toplam talep düzeyindeki değişmelerin reel ekonomik aktiviteyi etkileyebileceğini göstermişlerdir. Bu çerçevede Keynesyen iktisadın reenkarnasyonundan bahsetmek mümkündür. Ancak, söz konusu reenkarnasyonla birlikte Keynesyen İktisat, Keynes’in iktisadından biraz daha uzaklaşıp, Neo-klasik paradigmaya daha çok yaklaşmıştır. Dolayısıyla, Yeni Keynesyen iktisadı, Yeni Neo-Klasik Sentez olarak isimlendirmek mümkündür. Bu tez, Yeni Keynesyen iktisatçıların çalışmalarından hareketle ispatlanmaya çalışılacaktır

Anahtar Kelimeler

Yeni Keynesyen İktisat, Nominal Yapışkanlıklar, Eksik Bilgi, Koordinasyon Başarısızlıkları, Kurala Dayalı Politika

Is It New Keynesian Economics Or New Neo-Classical Synthesis?

Öz

New Keynesian Economists have built microeconomic foundations of
Keynesian macroeconomics by making researches in the field of nominal price and
wage stickiness and incomplete information and market failure. In this manner they
have showed that the changes in aggregate demand can affect real economic activity
even private sector agents have rational expectations and can expect the changes in
money supply. It is clear that the Keynesian economics reincarnated by these contributions
of New Keynesians.
But, together with this reincarnation, Keynesian economics have become distant
from the economics of Keynes and rather have come close to Neo-classical paradigm.
Thus, New Keynesian economics can be labeled as a New Neo-classical synthesis.
This argument will be proved by examining the studies of New Keynesian Economists.

Anahtar Kelimeler

New Keynesian Economics, Nominal Stickiness, Incomplete Information, Coordination Failures, Rules

Kaynakça

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