SMART relies on the Armington assumption to model the behavior of the consumer. In particular, the...
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SMART relies on the Armington assumption to model the behavior of the consumer. In particular, the adopted modeling approach is based on the assumption of imperfect substitutions between different import sources (different varieties). That is, goods (defined at the HS 6 digit level) imported from different countries, although similar, are imperfect substitutes-e.g., bananas from Ecuador are an imperfect substitute to bananas from Saint Lucia. Thanks to the Armington assumption, a preferential trade agreement does not produce a big bang solution, where all imports demand would shift to the beneficiary of the preferential tariff. Within the Armington assumption, the representative agent maximizes its welfare through a two-stage optimization process: First, given a general price index, she chooses the level of total spending/consumption on a "composite good?, (say aggregate consumption of bananas). The relationship between changes in the price index and the impact on total spending is determined by a given import demand elasticity. Then, within this composite good, she allocates the chosen level of spending among the different "varieties? of the good, depending on the relative price of each variety (say, choose more bananas from Ecuador, and less from Saint Lucia). The extent of the between-variety allocative response to change in the relative price is determined by the Armington substitution elasticity. SMART relies on the Armington assumption to model the behavior of the consumer. In particular, the adopted modeling approach is based on the assumption of imperfect substitutions between different import sources (different varieties). That is, goods (defined at the HS 6 digit level) imported from different countries, although similar, are imperfect substitutes-e.g., bananas from Ecuador are an imperfect substitute to bananas from Saint Lucia. Thanks to the Armington assumption, a preferential trade agreement does not produce a big bang solution, where all imports demand would shift to the beneficiary of the preferential tariff. Within the Armington assumption, the representative agent maximizes its welfare through a two-stage optimization process: First, given a general price index, she chooses the level of total spending/consumption on a "composite good?, (say aggregate consumption of bananas). The relationship between changes in the price index and the impact on total spending is determined by a given import demand elasticity. Then, within this composite good, she allocates the chosen level of spending among the different "varieties? of the good, depending on the relative price of each variety (say, choose more bananas from Ecuador, and less from Saint Lucia). The extent of the between-variety allocative response to change in the relative price is determined by the Armington substitution elasticity.
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The image you sent discusses maximizing welfare in the context of a trade model The model relies on the Armington assumption which says that consumers prefer variety even for similar goods 1 In the tw... View the full answer
Related Book For
Statistics For Business Decision Making And Analysis
ISBN: 9780321890269
2nd Edition
Authors: Robert Stine, Dean Foster
Posted Date:
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