This paper provides empirical evidence that product diversity drove a part of the evolution of consumers’ spending in the US over the 1993–2018 period. The change in the set of varieties available led consumers to increase by 1.19% the share of their budget allocated to a sector subject to the average variety expansion over that period. I exploit the exogenous change in the range of products available due to the growth of international trade to identify the causal relation. Using this identification strategy, I show that through changes in product diversity, international trade has a sizable effect on the evolution of patterns of consumption in a country, especially relative to the price effect.

中文翻译：

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贸易、获取品种和消费模式

本文提供的经验证据表明，产品多样性在 1993-2018 年期间推动了美国消费者支出的部分演变。可用品种的变化导致消费者将预算中分配给受该时期平均品种扩张影响的部门的份额增加了 1.19%。我利用由于国际贸易的增长而导致的可用产品范围的外生变化来确定因果关系。使用这种识别策略，我表明，通过产品多样性的变化，国际贸易对一个国家的消费模式的演变产生了相当大的影响，尤其是相对于价格效应而言。