مقایسهٔ روش‌ها

	Shift-Share Analysis	Social Accounting Matrix
حوزه	اقتصاد	اقتصاد
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1960	1962
پدیدآور	Edgar S. Dunn (Daniel Creamer credited with early use)	Richard Stone; popularized by Graham Pyatt & Jeffery Round
نوع	Descriptive decomposition of regional growth	Comprehensive, square, double-entry accounting framework
منبع بنیادین	Dunn, E. S. (1960). A statistical and analytical technique for regional analysis. Papers of the Regional Science Association, 6(1), 97–112.	Pyatt, G., & Round, J. I. (Eds.). (1985). Social Accounting Matrices: A Basis for Planning. Washington, DC: The World Bank. ISBN: 9780821305508
نام‌های دیگر	Shift-Share Decomposition, SSA, Esteban-Marquillas Shift-Share, Regional Shift-Share	SAM, Social Accounting Framework, SAM Multiplier Model
مرتبط	3	3
خلاصه	Shift-share analysis is a descriptive technique that decomposes the change in a regional variable — most often sectoral employment — into three additive components: the part attributable to overall national growth, the part attributable to the region's industry mix, and the part attributable to the region's own competitive performance. Formalized by Edgar Dunn in 1960, it answers whether a region grew because the national economy grew, because it specializes in fast-growing industries, or because its industries outperformed (or underperformed) their national counterparts.	A social accounting matrix (SAM) is a square, double-entry table that records all transactions among the production sectors, factors of production, institutions (households, firms, government), and the rest of the world in an economy for a given year. It extends the input-output table by closing the circular flow of income — connecting how value added becomes factor income, factor income becomes household income, and household income becomes demand — so that every account's receipts (its row) exactly equal its expenditures (its column).