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testinterference: Randomization Test for the Specification of Interference Structure

The testinterference package provides tools to test SUTVA and several hypotheses about spillover effects. Specifically, the package enables to perform randomization tests on whether or not the following null hypotheses are plausible:

  • Fisher: One’s outcome does not depend on one’s own treatment (i.e., Fisher’s sharp null hypothesis).
  • SUTVA: One’s outcome is determined by one’s own treatment (i.e., the stable unit treatment value assumption).
  • Exposure 1: One’s outcome is determined by whether there is at least one treated unit in one’s neighborhood including oneself.
  • Exposure 2: One’s outcome is determined by one’s own treatment and whether there is at least one treated peer.

The testing procedures are developed by Hoshino and Yanagi (2023) “Randomization test for the specification of interference structure”.

Installation

Get the package from GitHub:

# install.packages("devtools") # if needed
devtools::install_github("tkhdyanagi/testinterference", build_vignettes = TRUE)

Vignettes

For more details, see the package vignettes with:

# Getting Started with the testinterference Package
vignette("testinterference")

# Testing Procedure: Fisher's Sharp Null Hypothesis
vignette("Fisher", package = "testinterference")

# Testing Procedure: SUTVA
vignette("SUTVA", package = "testinterference")

# Testing Procedure: Exposure 1
vignette("exposure1", package = "testinterference")

# Testing Procedure: Exposure 2
vignette("exposure2", package = "testinterference")

References

  • Hoshino, T. and Yanagi, T., 2023. Randomization test for the specification of interference structure arXiv preprint arXiv:2301.05580. Link