Author

Ulrich Hounyo

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Preprint Aug 2026

Distributional Difference-in-Differences: Aggregation Before or After Quantile Inversion?

Staggered distributional difference-in-differences produces cohort-specific potential-outcome distributions, but applied work typically wants one overall quantile treatment effect. Two natural summaries---averaging cohort quantile treatment effects (QTTs) and mixing cohort distributions before inversion---use the same...

Ulrich Hounyo · 0 citations

Preprint Aug 2026

Identification and Information after Nuisance Projection

Empirical work often removes fixed effects, latent factors, or high-dimensional controls before estimating structural relationships. These transformations reduce confounding but may also remove identifying variation. We study linear panel IV after one equation-compatible nuisance projection under two-way dependence. Th...

Ulrich Hounyo · 0 citations

Preprint Jul 2026

Specification Testing for Dyadic Regression Models

This paper develops omnibus specification tests for linear conditional-mean models with undirected dyadic data. We establish a uniform projection theorem that reduces the dyadic process to its latent first-order node projections under shared-node dependence. We then show that a raw first-order node-multiplier bootstrap...

Ulrich Hounyo, Jiahao Lin, Xiao-Jun Song · 0 citations