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The Missing Link in Key Sectors Analysis

AutorCardenete, M. Alejandro; Sancho, Ferrán
Palabras claveKey sectors
Extraction methods
Fecha de publicación15-nov-2004
SerieUFAE and IAE Working Papers
ResumenIn general terms key sectors analysis aims at identifying the role, or impact, that the existence of a productive sector has in the economy. Quite a few measures, indicators and methodologies of varied complexity have been proposed in the literature, from multiplier sums to extraction methods, but not without debate about their properties and their information content. All of them, to our knowledge, focus exclusively on the interdependence effects that result from the input-output structure of the economy. By so doing the simple input-output approach misses critical links beyond the interindustry ones. A productive sector’s role is that of producing but also that of generating and distributing income among primary factors as a result of production. Thus when measuring a sector’s role, the income generating process cannot and should not be omitted if we want to better elucidate the sector’ economic role. A simple way to make the missing income link explicit is to use the SAM (Social Accounting Matrix) facility. This is what we do in this note. Using a standard extraction methodology we compare lost output with and without the missing link and observe the substantial differences in the measure of lost output associated to any given sector.
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