The Effects of the Structural Variables of the Iranian Industries on the Social Cost: The SCP Approach

Shahiki Tash, Mohammad Nabi; Jahantigh, Forough

doi:10.22099/ijes.2014.3110

Document Type : Research Paper

Authors

https://doi.org/10.22099/ijes.2014.3110

Abstract

This paper studies the effects of the structural variables of the Iranian industries sector on the welfare cost using to the Structure-Conduct-Performance (SCP) theory. In other words, we investigate the role of structural components and their effects on the size of the welfare cost in Iran's industry sector. We have used the Leibenstein's model to calculate the deadweight loss and then the panel data model has been used to quantify the model. Leibenstein believed that in many cases the monopolistic industries operate inefficiently due to being on the margin of safety. So in addition to the welfare triangle, the costs of the inefficiency of monopolistic industries should be also considered as the welfare cost. Our results demonstrate that there is a direct relationship between the welfare cost and all of the parameters of the model (barriers to entry, market concentration, economies of scale, state ownership share and firm size).

Keywords

Article Title [Persian]

اثر متغیرهای ساختاری در صنایع ایران بر روی هزینه رفاهی طبق روش SCP

Authors [Persian]

محمد نبی شهیکی تاش
فروغ جهان تیغ

Abstract [Persian]

در این تحقیق بر مبنای نگرش ساختار، رفتار و عملکرد (SCP) به بررسی نقش مولفه‌های ساختاری و تأثیر آنها بر روی بخش صنعت ایران می‌پردازیم. با استفاده از این روش می‌توان مولفه‌های ساختاری و تأثیر آن بر حجم هزینه رفاهی در بخش صنعت ایران را مورد بررسی قرار داد. در این تحقیق در راستای سنجش هزینه رفاهی از رویکرد لیبن اشتاین استفاده شده است و برای برآورد مدل (SCP) از روش پانل دیتا استفاده می‌شود. لیبن‌اشتاین معتقد بود که صنایع انحصاری بدلیل قرار گرفتن در حاشیه امن، در بسیاری موارد با عدم کارایی فعالیت میکنند. از اینرو وی معتقد بود که علاوه بر مثلث رفاه، میباید هزینه‌های ناشی از عدم کارایی صنایع انحصاری را به‌عنوان هزینه رفاهی قلمداد کرد. یافته‌های تحقیق بیانگر این موضوع است که همه پارامترهای مدل (موانع ورود، تمرکز بازار، صرفه‌های ناشی از مقیاس، سهم مالکیت دولتی و اندازه صنعت) ارتباط مستقیمی با هزینه رفاهی دارند.

Keywords [Persian]

مدل لیبن اشتاین
ناکارایی
هزینه رفاهی
روش SCP

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Iranian Journal of Economic Studies

The Effects of the Structural Variables of the Iranian Industries on the Social Cost: The SCP Approach

References

References

Volume 3, Issue 1 - Serial Number 1
April 2014
Pages 21-42

The Effects of the Structural Variables of the Iranian Industries on the Social Cost: The SCP Approach

References

References

Volume 3, Issue 1 - Serial Number 1April 2014Pages 21-42

Volume 3, Issue 1 - Serial Number 1
April 2014
Pages 21-42