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| Location Quotient× | Инструментална променлива с изместване-дял (инструмент на Бартик)× | |
|---|---|---|
| Област≠ | Икономика | Причинно-следствено заключение |
| Семейство≠ | Process / pipeline | Regression model |
| Година на възникване≠ | 1960 | 2020 |
| Създател≠ | Developed in regional science; codified by Walter Isard | Bartik (1991); identification framework by Goldsmith-Pinkham, Sorkin & Swift (2020) and Borusyak, Hull & Jaravel (2022) |
| Тип≠ | Descriptive index of relative regional concentration | Instrumental-variable design |
| Основополагащ източник≠ | Isard, W. (1960). Methods of Regional Analysis: An Introduction to Regional Science. Cambridge, MA: MIT Press. ISBN: 9780262090032 | Goldsmith-Pinkham, P., Sorkin, I. & Swift, H. (2020). Bartik Instruments: What, When, Why, and How. American Economic Review, 110(8), 2586–2624. DOI ↗ |
| Други названия | LQ, Coefficient of Localization, Regional Specialization Ratio | Bartik instrument, shift-share instrument, Shift-Share Araç Değişkeni (Bartik Instrument) |
| Свързани≠ | 3 | 5 |
| Резюме≠ | The 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). |
| ScholarGateНабор от данни ↗ |
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