Cross-Border Product Diffusion: Migrant Networks, Consumer Imports, and Retailer Learning
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This paper studies how new varieties enter markets and become locally available. We provide causal evidence of demand externalities that operate in two steps. First, information about new varieties diffuses directly through real-world social ties among consumers. Second, early purchases generate an
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美国国家经济研究局创建时间：
2026-04-01
