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Innovation Diffusion in Heterogeneous Populations: Contagion, Social Influence, and Social Learning

H. Peyton Young · 2009 · American Economic Review

Summary. This paper develops theoretical models explaining how new ideas and products spread through populations with different characteristics. The author examines three diffusion mechanisms—contagion, social influence, and social learning—and shows each creates a distinct pattern in adoption curves. Using historical data on hybrid corn adoption, the paper demonstrates how to empirically distinguish between these diffusion mechanisms and provides tools for analyzing innovation spread in heterogeneous groups.

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Young, H. P.. (2009). Innovation Diffusion in Heterogeneous Populations: Contagion, Social Influence, and Social Learning. American Economic Review. https://doi.org/10.1257/aer.99.5.1899

Details

DOI
10.1257/aer.99.5.1899
Countries
United States
Regions
North America
Categories
innovation-theory, food-systems, general-innovation
Added
2026-04-28