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The Income Elasticity of Import Demand: Micro Evidence and An Application

David Hummels, Kwan Yong Lee

NBER Working Paper No. 23338
Issued in April 2017
NBER Program(s):The International Trade and Investment Program

We construct a synthetic panel of household expenditures from the Consumer Expenditure Survey (CEX) and use the Quadratic Almost Ideal Demand System to estimate expenditure shares and income elasticities of demand that vary by good-income-time. We show that the size and distribution of income shocks drives expenditure change in a manner that varies profoundly across traded goods. Our estimates of expenditure shares and income elasticities could be useful in many applications that seek to explain changes in trade behavior from the demand side, and indicate the strong sensitivity of trade to changes in the tails of the income distribution. We explore an application involving the Great Trade Collapse. Income-induced expenditure changes are positively correlated with the cross-good pattern of import changes, generating a predicted change 40% as large as the raw variation in import declines.

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Document Object Identifier (DOI): 10.3386/w23338

Published: David Hummels & Kwan Yong Lee, 2018. "The Income Elasticity of Import Demand: Micro Evidence and An Application," Journal of International Economics, .

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