A Theory of Input-Output Architecture

• 成果类型: Article
• 署名作者: Oberfield, Ezra
• 署名单位: Princeton University
• 刊物名称: ECONOMETRICA
• ISSN/ISSBN: 0012-9682
• DOI: 10.3982/ECTA10731
• 发表日期: 2018
• 页码: 559-589
• 关键词: aggregate fluctuations; size distribution; Network structure; BUSINESS FIRMS; Power laws; GROWTH; TRADE; equilibrium; ECONOMICS; selection

摘要

Individual producers exhibit enormous heterogeneity in many dimensions. This paper develops a theory in which the network structure of productionwho buys inputs from whomforms endogenously. Entrepreneurs produce using labor and exactly one intermediate input; the key decision is which other entrepreneur's good to use as an input. Their choices collectively determine the economy's equilibrium input-output structure, generating large differences in size and shaping both individual and aggregate productivity. When the elasticity of output to intermediate inputs in production is high, star suppliers emerge endogenously. This raises aggregate productivity as, in equilibrium, more supply chains are routed through higher-productivity techniques.