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Spillovers as a Driver to Reduce Ex-post Inequality Generated by Randomized Experiments: Experiments from an Agricultural Training Intervention

Author

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  • TAKAHASHI, Kazushi
  • MANO, Yukichi
  • OTSUKA, Keijiro

Abstract

Randomized experiments ensure equal opportunities but could generate unequal outcomes by treatment status, which is socially costly. This study demonstrates a sequential intervention to conduct impact evaluation and subsequently to mitigate “experiment-driven” inequality. Specifically, control farmers were initially restricted from exchanging information with treated farmers, who received rice management training, to satisfy the stable unit treatment value assumption. We then encouraged information exchange between farmers one year after the training. We found positive training effects, but performance gaps created by our randomized assignment disappeared over time because of information spillovers and, hence, eventually control farmers also benefitted from our experiment.

Suggested Citation

  • TAKAHASHI, Kazushi & MANO, Yukichi & OTSUKA, Keijiro, 2018. "Spillovers as a Driver to Reduce Ex-post Inequality Generated by Randomized Experiments: Experiments from an Agricultural Training Intervention," Discussion paper series HIAS-E-69, Hitotsubashi Institute for Advanced Study, Hitotsubashi University.
  • Handle: RePEc:hit:hiasdp:hias-e-69
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    More about this item

    Keywords

    Inequality; Program evaluation; Randomised experiment; Spillover;

    JEL classification:

    • O12 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Microeconomic Analyses of Economic Development
    • O13 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Agriculture; Natural Resources; Environment; Other Primary Products
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • Q12 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Micro Analysis of Farm Firms, Farm Households, and Farm Input Markets

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