بررسی ترجیحات آشکار شده شهروندان ایرانی برای قند و شکر

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استاد دانشکده کشاورزی دانشگاه فردوسی مشهد

2 دانشجوی دکترای گروه اقتصاد کشاورزی دانشکده کشاورزی دانشگاه فردوسی مشهد

چکیده

سهم بالای قند و شکر از انرژی مصرفی کشور بیانگر وابستگی شدید بدین محصولات در سبد غذایی بسیاری از خانوارهای ایرانی است. بنابراین، شناخت ترجیحات مصرف‌کنندگان این نوع محصولات برای سیاست‏گذاری و برنامه‌ریزی بسیار اهمیت دارد. در این راستا، در مطالعة حاضر، به‏منظور بررسی تغییر ترجیحات مصرف‌کنندگان مناطق شهری ایران برای محصولات قند و شکر در فاصله سال‌های 1386 تا 1395، از آزمون ناپارامتری ترجیحات آشکارشدة ضعیف (WARP) استفاده شد. نتایج بررسی اصل WARP نشان داد که در سال‌های 1388، 1389 و 1390، تناقضاتی در ترجیحات مصرف‌کنندگان این محصولات وجود داشته و فرضیه پایایی ترجیحات مصرف‌کننده نقض شده است؛ و به‏نظر می‌رسد که افزایش تعرفه بر شکر وارداتی یکی از دلایل مهم نقض این فرضیه باشد.

کلیدواژه‌ها


عنوان مقاله [English]

A Survey on Revealed Preferences of Iranian Citizens for Sugar and Lump Sugar

نویسندگان [English]

  • M. R. Kohansal 1
  • E. Azam Rahmati 2
1 Professor, Department of Agricultural Economics, Ferdowsi University of Mashhad, Mashhad, Iran
2 PHD student of Agricultural Economic department- Agricultural Faculty- Ferdowsi University
چکیده [English]

The high proportion of sugar and lump sugar in energy consumption shows that many Iranian households depend extremely on these products in their food bundle. Therefore, recognizing consumer preferences for the types of products is very important for policy making and planning. This study aimed at investigating the structural changes in consumer preferences during 2007-17. For this purpose, the non-parametric approach based on Weak Axiom of Revealed Preference (WARP) was used. The results of nonparametric approach indicated that there was an inconsistency in the WARP matrix in 2010, 2011 and 2012; and the assumption of the reliability of consumer preferences was violated in these years mainly due to increase in tariffs of imported sugar.

کلیدواژه‌ها [English]

  • Preferences
  • sugar
  • Lump Sugar
  • WARP matrix
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