THEORETICAL MODELS OF MARKET POWER

Yıl 2014, Cilt: 5 Sayı: 10, 92 - 121, 04.08.2016

Onur Demirel Selim Adem Hatırlı - -

Öz

In the study, following a brief overview of concentration indices that may be accepted as the ancestors of the models of market power, structural models namely the SCP Paradigm, Efficient Structure Hypothesis and Relative Market Power Hypothesis and non-structural model namely Iwata Model, Panzar-Rosse (P-R) Model and Bresnahan-Lau Model are examined. In this context the basic assumptions, the cause and effect relations, the advantages and disadvantages and the theoretical differences of the models are mentioned and finally all the models are compared and contrasted. As the result of this comparison Bresnahan-Lau Model is determined to be the most robust theoretical model

Anahtar Kelimeler

Market Power, SCP Paradigm, Efficient Structure Hypothesis, PanzarRosse (P-R) Model, Bresnahan-Lau Model

TEORİK PAZAR GÜCÜ MODELLERİ

Öz

Bu çalışmada pazar gücü ölçme yöntemlerinin ataları sayılan yoğunlaşma endekslerine kısa bir bakışın ardından, yapısal modeller arasında yer alan SCP Paradigması, Etkinlik Hipotezi ve Göreceli Piyasa Gücü Hipotezi ile yapısal-olmayan modeller arasında yer alan Iwata Modeli, Panzar-Rosse (P-R) Modeli ve BresnahanLau Modeline değinilmiştir. Bu bağlamda modellerin varsayımları, neden-sonuç ilişkileri, avantaj ve dezavantajları ve teorik farklılıklarına değinildikten sonra tüm modeller arasında bir kıyaslamaya gidilmiştir. Kıyaslama sonucunda teorik açıdan en güçlü model olarak Bresnahan-Lau Modeli tespit edilmiştir

Anahtar Kelimeler

Pazar Gücü, SCP Paradigması, Etkinlik Hipotezi, Panzar-Rosse (P-R) Modeli, Bresnahan-Lau Modeli

Kaynakça

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