Package: hettx Type: Package Title: Fisherian and Neymanian Methods for Detecting and Measuring Treatment Effect Variation Version: 1.0.1 Date: 2026-02-24 Authors@R: c( person("Peng", "Ding", email = "pengdingpku@berkeley.edu", role = "aut"), person("Avi", "Feller", email = "afeller@berkeley.edu", role = "aut"), person("Ben", "Fifield", email = "benfifield@gmail.com", role = c("aut", "cre")), person("Luke", "Miratrix", email = "lmiratrix@g.harvard.edu", role = "aut") ) Description: Implements methods developed by Ding, Feller, and Miratrix (2016) , and Ding, Feller, and Miratrix (2018) for testing whether there is unexplained variation in treatment effects across observations, and for characterizing the extent of the explained and unexplained variation in treatment effects. The package includes wrapper functions implementing the proposed methods, as well as helper functions for analyzing and visualizing the results of the test. License: GPL (>= 3) Imports: generics, quantreg, mvtnorm, MASS, foreach, parallel, doParallel, moments, ggplot2 Depends: R (>= 4.0.0) BugReports: https://github.com/bfifield/hettx/issues RoxygenNote: 7.3.3 Suggests: testthat, knitr, rmarkdown, dplyr, tidyr, purrr Encoding: UTF-8 VignetteBuilder: knitr LazyData: true Repository: https://bfifield.r-universe.dev Date/Publication: 2026-02-24 15:00:00 UTC RemoteUrl: https://github.com/bfifield/hettx RemoteRef: HEAD RemoteSha: f2e8cd2e28b16d5e3bb868285b902e1b0495068e NeedsCompilation: no Packaged: 2026-09-22 07:26:42 UTC; root Author: Peng Ding [aut], Avi Feller [aut], Ben Fifield [aut, cre], Luke Miratrix [aut] Maintainer: Ben Fifield