방법 비교

	공간 계량경제학적 외생변수(Spatial Instrumental Variables, Spatial IV / Spatial 2SLS)	공간적 인과 영향 분석
분야	인과추론	인과추론
계열	Regression model	Regression model
기원 연도	1988-1998	2010s (codified)
창시자	Kelejian & Prucha (generalized spatial 2SLS); Anselin (spatial econometrics framework)	Delgado & Florax (spatial DiD); Halleck Vega & Elhorst (SLX model); broader lineage in spatial econometrics (Anselin, 1988)
유형	Quasi-experimental causal inference with spatial dependence	Quasi-experimental causal inference with spatial data
원전	Kelejian, H. H., & Prucha, I. R. (1998). A Generalized Spatial Two-Stage Least Squares Procedure for Estimating a Spatial Autoregressive Model with Autoregressive Disturbances. Journal of Real Estate Finance and Economics, 17(1), 99-121.	Delgado, M. S., & Florax, R. J. G. M. (2015). Difference-in-differences techniques for spatial data: Local autocorrelation and spatial interaction. Economics Letters, 137, 123-126.
별칭	Spatial IV, Spatial 2SLS, Spatial Two-Stage Least Squares, S-IV	spatial causal inference, geo-causal analysis, spatial treatment effect estimation, spatial impact evaluation
관련	6	4
요약	Spatial Instrumental Variables (Spatial IV) is a causal inference method for settings where units — regions, firms, neighborhoods — are spatially interdependent, creating endogeneity that standard IV approaches ignore. It constructs instruments from the spatially lagged values of exogenous characteristics of neighboring units, then applies two-stage least squares to recover unbiased causal estimates in the presence of both endogenous regressors and spatial autocorrelation.	Spatial causal impact analysis estimates the causal effect of a spatially-targeted intervention — a policy, shock, or treatment applied to particular locations — while explicitly accounting for geographic spillovers between treated and untreated units. By combining quasi-experimental designs such as difference-in-differences or regression discontinuity with spatial econometric models, it separates the direct local effect of a treatment from indirect effects that diffuse to neighbouring areas.