بررسی رابطه غیرخطی نابرابری درآمدی و رشد اقتصادی: مطالعه موردی ایران

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری اقتصاد دانشگاه تبریز

2 استاد اقتصاد دانشگاه تبریز

3 دانشیار اقتصاد دانشگاه شهید بهشتی

چکیده

هدف مقاله بررسی تأثیر تولید ناخالص داخلی سرانه و دیگر عوامل مرتبط با سطوح توسعه‌یافتگی بر توزیع درآمد کشور ایران در هر دو مشخصه خطی و غیر خطی می‌باشد. برای این منظور، روش هم‌انباشتگی رویکرد ARDL برای بررسی وجود رابطه بلندمدت بین متغیرها استفاده ‌شده ‌است و ضرایب مدل‌های‌ بلندمدت و تصحیح خطا برای رفتار کوتاه‌مدت در دوره 1395-1357 برآورد گردیده‌اند. برآورد پایه‌ای و تحلیل‌های حساسیت نشان می‌دهد که نابرابری بطور معکوس با رشد اقتصادی در بلندمدت مرتبط است. به عبارت دیگر وجود منحنی U شکل (و نه معکوس کوزنتس) در ایران مورد تأیید قرار گرفت. با تعمیم خصوصیات کوزنتس، نتایج احتمال منحنی S شکلی را نیز تأیید نمود. این مقاله، مسیر جدیدی برای سیاست‌گذاران جهت شناخت موقعیت اقتصاد کشور در مراحل توسعه و توجه به اثرگذاری عوامل توسعه بر توزیع درآمد عادلانه ایجاد می‌کند. همچنین تلاشی پیشگام برای کاربست رویکرد ARDL در اقتصاد ایران در بررسی وجود و نوع رابطه کوزنتس می‌باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Study of Non-linear Relationship between Income Inequality and Economic Growth: A Case of Iran

نویسندگان [English]

  • Sakineh Ashrafi 1
  • Davood Behbudi 2
  • Farhad Dejpasand 3
1 Ph.D. Candidate in Economics, University of Tabriz
2 Professor of Economics, University of Tabriz
3 Associate Professor of Economics, University of Shahid Beheshti
چکیده [English]

The purpose of this paper is to investigate the effect economic growth to income inequality, both in linear and non-linear specification. Autoregressive distributed lag model (ARDL) approach has been used co-integration method for long run relationships and error correction model (ECM) for short run behavior. The paper has used annual time series data over the period of 1978 up to 2016. Empirically, our baseline estimation and sensitivity analyzes have indicated the inequality is negatively and significantly, associated with economic growth in long run. Our finding is contrast to the Kuznets inverted- U and support for the existence of Kuznets U as well as S- shaped curve in Iran. This paper opens up new direction for policy-making authorities to equalize income distribution and understanding the economic situation in the development process. This paper makes a unique contribution to the literature with reference to Iran, being a pioneer attempt that employs ARDL co-integration approach.

کلیدواژه‌ها [English]

  • Economic growth
  • Income distribution
  • Kuznets curve
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