Skip to content

Author

S. Halkiewicz

We have 3 of 15 papers

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

Preprint Aug 2026

Breakdown Reliability for Saturated Fixed-Effect Inference

Fixed-effect saturation does not itself distort conventional inference, but classical measurement error does. Under a local noise drift $\sigma_\nu^2=c^2/n$, the FE-OLS $t$-statistic converges to a non-central normal; saturation contributes a common $\sqrt{1-\rho}$ scaling rather than preferentially destroying signal o...

S. Halkiewicz · 0 citations
Preprint Aug 2026

Exact Inference in Fixed-Effect Regressions with Concentrated Identifying Variation

In fixed-effect regressions with many groups, fixed effects can absorb most identifying variation, leaving a handful of observations to carry what remains. When variation is this concentrated, conventional $t$-tests can reject a true null more than half the time, and any fixed critical value is either invalid or so con...

S. Halkiewicz · 0 citations
Preprint Jul 2026

Variance Estimation for Saturated Fixed-Effect Specifications

We characterize the asymptotic behavior of conventional variance estimators in linear regression with high-dimensional fixed effects under a drift in which both the proportional fixed-effect dimension $\rho_n = d_{K_n}/n \to \rho \in [0,1)$ and the residual treatment variance $\tau_n^2 = nQ_{K_n} \to \tau^2 \in (0, \in...

S. Halkiewicz · 0 citations

We use cookies to run the site and, with your consent, for analytics and to show ads. See our Cookie Policy.