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Are food price elasticities different across city sizes? The aim of this article is to estimate expenditure and own-price elasticities for 10 aggregated food product groups using the Spanish Household Budget Survey for the year 2010. These products are the ones for which the survey provides information regarding prices and quantities, thus allowing the application of an Almost Ideal Demand System (AIDS) model with censored data. The estimation procedure allows not only  comparisons to be made among households with different levels of income, but also the contribution of residence characteristics to variations in demand. The results confirm that the size of the city in which the household resides has a similar significant and relevant effect on consumption patterns as family income level. This is especially clear with own-price elasticities. In Spain, large central cities show a greater response to price changes than smaller cities or rural peripheral areas. [ABSTRACT FROM PUBLISHER]

This paper presents an empirical framework for analysing spatial wage inequality in Chile. Chile is primarily characterized by two stylized facts: the high spatial concentration around the metropolitan area and the key role of natural resources in the country. The paper considers both elements in a competition between NEG (new economic geography) and a theory based on natural resource endowment, with both theories incorporating human capital via a multilevel analysis. The results show the poor performance of NEG for Chile and indicate that natural resources are the principal cause of spatial wage variability in Chile. RÉSUMÉ La présente communication illustre un cadre d'analyse empirique de l'inégalité spatiale entre les salaires, au Chili. Le Chili est caractérisé principalement par les deux faits stylisés suivants : une concentration spatiale élevée autour de la zone métropolitaine, et le rôle essentiel que jouent les ressources naturelles dans ce pays. Cette communication se penche sur ces deux éléments dans le cadre d'une compétition entre deux théories : d'une part la nouvelle géographie économique (« NEG »), de l'autre une théorie fondée sur la dotation en ressources naturelles, ces deux théories incorporant le capital humain par le biais d'une analyse à multiples niveaux. Les résultats démontrent les mauvais résultats de NEG pour le Chili, et indiquent que les ressources naturelles sont la principale cause de la variabilité spatiale des salaires au Chili. EXTRACTO Este estudio presenta un marco empírico para analizar la desigualdad espacial de los salarios en Chile. Chile se caracteriza principalmente por dos hechos estilizados: la alta concentración espacial alrededor del área metropolitana y la función clave de los recursos naturales del país. El estudio considera ambos elementos en una competición entre la NEG (Nueva Geografía Económica) y una teoría basada en el legado de recursos naturales, donde ambas teorías incorporan el capital humano a través de un análisis de múltiples niveles. Los resultados muestran un bajo rendimiento de la NEG en relación con Chile e indican que los recursos naturales son la causa principal de la variabilidad espacial de los salarios en Chile. 摘要: 本文提出了一种分析智利区域工资不均的经验框架。智利主要有两大特点:大城市地区高度空间聚集和农村地区自然资源作用巨大。本文在对NEG (新经济地理学)和基于自然资源储藏量的理论进行比较时, 考虑了这两个因素, 同时还通过多层次分析纳入了人力资源因素。结果显示智利NEG性能很差, 表明智利区域工资差异的主要原因是自然资源。 [ABSTRACT FROM AUTHOR]