Comparer des méthodes

	Location Quotient	Shift-Share Analysis
Domaine	Économie	Économie
Famille	Process / pipeline	Process / pipeline
Année d'origine	1960	1960
Auteur d'origine	Developed in regional science; codified by Walter Isard	Edgar S. Dunn (Daniel Creamer credited with early use)
Type	Descriptive index of relative regional concentration	Descriptive decomposition of regional growth
Source fondatrice	Isard, W. (1960). Methods of Regional Analysis: An Introduction to Regional Science. Cambridge, MA: MIT Press. ISBN: 9780262090032	Dunn, E. S. (1960). A statistical and analytical technique for regional analysis. Papers of the Regional Science Association, 6(1), 97–112.
Alias	LQ, Coefficient of Localization, Regional Specialization Ratio	Shift-Share Decomposition, SSA, Esteban-Marquillas Shift-Share, Regional Shift-Share
Apparentées	3	3
Résumé	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.	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.