@article{testingeffecthomogeneityandconfoundingin,
  title = {Testing Effect Homogeneity and Confounding in High-Dimensional Experimental and Observational Studies},
  author = {Ana Armendariz and Martin Huber},
  year = {2026},
  eprint = {2602.19703},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2602.19703},
}