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title: "Learning to Coordinate: A Study in Retail Gasoline"
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[David P. Byrne; Nicolas de Roos (2019)](https://doi.org/10.1257/aer.20170116). *American Economic Review*.

**Under development — community extension.** This is a provisional source-design assessment, not a new successful replication or a final eligibility ruling.

[Extension index](development.html) · [Provisional eligibility log](development.html#eligibility-log) · [Assessment JSON](aeraej-138.json) · [QMD](aeraej-138.qmd) · [Reproduction code](collection-code.zip)

## Source design and template applicability

The supplied empirical targets concern gasoline-price cycles, alignment and margins. There is no selected binary treatment with an adoption/control contrast for this template.

No DiD estimates, uncertainty intervals or homogeneity-test decision were computed in this tranche. No point is added to the calibration plots. This is not a zero effect or a failed statistical test.

## Recorded treatment-column measurement

**Not applicable.**

The selected descriptive price-coordination/event-sequence analysis has no single exogenous treatment column.

These are the existing data-measured counts, not counts inferred from design labels. A binary instrument, group indicator or interaction component need not be the treatment of interest; the source-design assessment above takes precedence for template applicability.

## Replication status

**This tranche:** unsupported design; source code/documentation inspected, no estimator run.

**Supplied library:** no_did_analysis_data; verification: no scalar DiD target; preparation: runs_with_shim. These are the library’s labels, not new verification claims. Missing data and unsupported designs are separate issues.

## Evidence and provenance

The following files in the supplied library were inspected. Their SHA-256 digests are recorded in the downloadable assessment JSON. Source archives and microdata are not redistributed.

- `AER/Byrne_de_Roos_AER_2019_113176/R/138_byrne_de_roos_replicate.R` (247 lines)
- `AER/Byrne_de_Roos_AER_2019_113176/verdict.md` (48 lines)
- `AER/Byrne_de_Roos_AER_2019_113176/aeraej-138.md` (110 lines)