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12 changes: 12 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -5,6 +5,18 @@ All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

### Fixed
- **Dube, Girardi, Jordà & Taylor (2025) citation corrected to *J. Applied Econometrics*
40(**7**):741-758** (was cited as issue 5) across `docs/references.rst`,
`docs/methodology/REGISTRY.md`, `docs/methodology/papers/dube-2025-review.md`,
`docs/api/lpdid.rst`, and `carousel/generate_lpdid_carousel.py`. Verified against the
published record (DOI 10.1002/jae.70000; IDEAS/RePEc `wly/japmet/v40y2025i7p741-758`).
Historical CHANGELOG entries (the 3.6.0 release notes) intentionally retain the
original attribution as a record of what was claimed at release time; this entry
supersedes it.

## [3.6.2] - 2026-07-03

### Added
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2 changes: 1 addition & 1 deletion carousel/generate_lpdid_carousel.py
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Expand Up @@ -816,7 +816,7 @@ def slide_01_cover(self):
self.cell(
WIDTH,
8,
"Dube, Girardi, Jordà & Taylor (2025), J. of Applied Econometrics 40(5).",
"Dube, Girardi, Jordà & Taylor (2025), J. of Applied Econometrics 40(7).",
align="C",
)
self.set_xy(0, HEIGHT - 51)
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2 changes: 1 addition & 1 deletion docs/api/lpdid.rst
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Expand Up @@ -61,7 +61,7 @@ estimand is a strictly non-negatively-weighted average of cohort effects.

**Reference:** Dube, A., Girardi, D., Jordà, Ò., & Taylor, A. M. (2025). A Local
Projections Approach to Difference-in-Differences. *Journal of Applied
Econometrics*, 40(5), 741-758.
Econometrics*, 40(7), 741-758.

.. module:: diff_diff.lpdid

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2 changes: 1 addition & 1 deletion docs/methodology/REGISTRY.md
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Expand Up @@ -1798,7 +1798,7 @@ Consolidated list of substantive deviations from the W2025 paper and from R `etw

## LPDiD

**Primary source:** [Dube, A., Girardi, D., Jordà, Ò., & Taylor, A. M. (2025). "A Local Projections Approach to Difference-in-Differences." *Journal of Applied Econometrics*, 40(5), 741-758.](https://doi.org/10.1002/jae.70000) (Open Access; NBER Working Paper 31184; FRBSF Working Paper 2023-12.) Paper review on file: `docs/methodology/papers/dube-2025-review.md` (main article + official online appendix; equation/section numbering pinned to the JAE 2025 version).
**Primary source:** [Dube, A., Girardi, D., Jordà, Ò., & Taylor, A. M. (2025). "A Local Projections Approach to Difference-in-Differences." *Journal of Applied Econometrics*, 40(7), 741-758.](https://doi.org/10.1002/jae.70000) (Open Access; NBER Working Paper 31184; FRBSF Working Paper 2023-12.) Paper review on file: `docs/methodology/papers/dube-2025-review.md` (main article + official online appendix; equation/section numbering pinned to the JAE 2025 version).

**Reference implementations:** Stata `lpdid` (SSC `s459273`, the authors' reference); R `alexCardazzi/lpdid` (third-party; absorbing + non-absorbing); authors' example scripts `danielegirardi/lpdid` (R + Stata).

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4 changes: 2 additions & 2 deletions docs/methodology/papers/dube-2025-review.md
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@@ -1,7 +1,7 @@
# Paper Review: A Local Projections Approach to Difference-in-Differences

**Authors:** Arindrajit Dube, Daniele Girardi, Òscar Jordà, Alan M. Taylor
**Citation:** Dube, A., Girardi, D., Jordà, Ò., & Taylor, A. M. (2025). A Local Projections Approach to Difference-in-Differences. *Journal of Applied Econometrics*, 40(5), 741-758. https://doi.org/10.1002/jae.70000 (Open Access, CC BY)
**Citation:** Dube, A., Girardi, D., Jordà, Ò., & Taylor, A. M. (2025). A Local Projections Approach to Difference-in-Differences. *Journal of Applied Econometrics*, 40(7), 741-758. https://doi.org/10.1002/jae.70000 (Open Access, CC BY)
**PDF reviewed:** papers/J of Applied Econometrics - 2025 - Dube - A Local Projections Approach to Difference-in-Differences.pdf (main article, 18 pp) **+** papers/lpdid_online_appendix.pdf (official Wiley online appendix, 24 pp; Appendices A-C reviewed in full, D-F = simulation/empirical replication, skimmed). Both gitignored under top-level `papers/`; do NOT commit the PDFs.
**Review date:** 2026-06-28

Expand All @@ -13,7 +13,7 @@

## LPDiD

**Primary source:** Dube, Girardi, Jordà & Taylor (2025), *Journal of Applied Econometrics* 40(5):741-758, https://doi.org/10.1002/jae.70000. NBER WP 31184; FRBSF WP 2023-12. Reference Stata package `lpdid` (SSC s459273); authors' example repo https://github.com/danielegirardi/lpdid (R + Stata).
**Primary source:** Dube, Girardi, Jordà & Taylor (2025), *Journal of Applied Econometrics* 40(7):741-758, https://doi.org/10.1002/jae.70000. NBER WP 31184; FRBSF WP 2023-12. Reference Stata package `lpdid` (SSC s459273); authors' example repo https://github.com/danielegirardi/lpdid (R + Stata).

**Key implementation requirements:**

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2 changes: 1 addition & 1 deletion docs/references.rst
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Expand Up @@ -259,7 +259,7 @@ Multi-Period and Staggered Adoption
Local Projections DiD
---------------------

- **Dube, A., Girardi, D., Jordà, Ò., & Taylor, A. M. (2025).** "A Local Projections Approach to Difference-in-Differences." *Journal of Applied Econometrics*, 40(5), 741-758. https://doi.org/10.1002/jae.70000 (Open Access; NBER Working Paper 31184; FRBSF Working Paper 2023-12.)
- **Dube, A., Girardi, D., Jordà, Ò., & Taylor, A. M. (2025).** "A Local Projections Approach to Difference-in-Differences." *Journal of Applied Econometrics*, 40(7), 741-758. https://doi.org/10.1002/jae.70000 (Open Access; NBER Working Paper 31184; FRBSF Working Paper 2023-12.)

Primary source for the ``LPDiD`` estimator: per-horizon long-difference local-projection regressions estimated on a "clean control" sample, yielding non-negatively-weighted event-study and pooled ATTs (variance-weighted by default; reweighted regression or regression adjustment for the equally-weighted ATT; premean-differenced base periods; covariates; non-absorbing extension). Reference Stata package ``lpdid`` (SSC s459273); R ``alexCardazzi/lpdid``. Paper review on file at ``docs/methodology/papers/dube-2025-review.md``.

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