Estimación de la estructura Intertemporal de la demanda de alimentos en España
En este trabajo estimamos la estructural intertemporal de la demanda de alimentos en España utilizando el modelo SNAP (Simple Nonadditive Preferences). Nuestro princiñpal resultado es el rechazo de la hipótesis de separabilidad intertemporal. Dicha no separabilidad se observa fundamentalmente en el grupo pan y cereales, el cual es autocomplementario en los períodos inmediatamente anterior y posterior al corriente. Constatamos que pan y cereales, carne, pescado, leche y huevos y, finalmente, vegetales y frutas son bienes de primera necesidad, mientras que el agregado otros bienes se comporta como un bien de lujo. Todas las demandas Marshallianas son decrecientes e inelásticas y los efectos Frisch (a corto y largo plazo) son negativos In this paper we estimate the intertemporal structure of food demand in Spain using the SNAP (Simple Nonadditive Preferences) model. Ourprincipal finding is that time separability is rejected. This nonsepparability over time is observed on bread and cereals, which is on autocomplement in the periods immediately before and after the current one. We find that bread and cereals, meal, fish, milk and eggs and, finally, vegetables and fruit are necessities, whereas other food behaves as a luxury group. All Marshallian demands are decreasing and inelastic and the Frisch (Short and long-run) effects are negative.
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Volume (Year): 7 (1997)
Issue (Month): (Junio)
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