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Location Quotient×أداة المتغيرات المستقلة للتحول والمشاركة (أداة بارتيك)×
المجالالاقتصادالاستدلال السببي
العائلةProcess / pipelineRegression model
سنة النشأة19602020
صاحب الطريقةDeveloped in regional science; codified by Walter IsardBartik (1991); identification framework by Goldsmith-Pinkham, Sorkin & Swift (2020) and Borusyak, Hull & Jaravel (2022)
النوعDescriptive index of relative regional concentrationInstrumental-variable design
المصدر التأسيسيIsard, W. (1960). Methods of Regional Analysis: An Introduction to Regional Science. Cambridge, MA: MIT Press. ISBN: 9780262090032Goldsmith-Pinkham, P., Sorkin, I. & Swift, H. (2020). Bartik Instruments: What, When, Why, and How. American Economic Review, 110(8), 2586–2624. DOI ↗
الأسماء البديلةLQ, Coefficient of Localization, Regional Specialization RatioBartik instrument, shift-share instrument, Shift-Share Araç Değişkeni (Bartik Instrument)
ذات صلة35
الملخصThe location quotient (LQ) is a simple descriptive index that measures how concentrated an industry is in a region relative to a larger reference area, usually the nation. It is the ratio of the industry's share of local employment (or output) to its share of national employment. An LQ above one means the region is more specialized in that industry than the nation as a whole; an LQ below one means it is under-represented.The shift-share instrumental variable, widely known as the Bartik instrument, is a causal-inference strategy that builds an instrument by interacting national or sector-level shocks (the shifts) with local composition weights (the shares). Its modern identification framework was set out by Goldsmith-Pinkham, Sorkin and Swift (2020) and Borusyak, Hull and Jaravel (2022).
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ScholarGateقارن الطرق: Location Quotient · Shift-Share IV. استُرجع بتاريخ 2026-06-25 من https://scholargate.app/ar/compare