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title: "The Willingness to Pay for a Cooler Day: Evidence from 50 Years of Major League Baseball Games"
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[Kevin Kuruc; Melissa LoPalo; Sean O'Connor (2024)](https://doi.org/10.1257/app.20220606). *American Economic Journal: Applied Economics*.

**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-493.json) · [QMD](aeraej-493.qmd) · [Reproduction code](collection-code.zip)

## Source design and template applicability

The target is a temperature response curve represented by eleven temperature-bin indicators. A vector of dose bins is not a binary treatment, and games are not absorbing policy adopters.

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

**96,231 distinct nonmissing values** in `wtemp_avg`.

Observed support in the indicated source frame; missing values excluded. N=132,649; missing=1,658. Frame: selected_source_data. Source: /Volumes/LAL_BAK/did-cardinality-work/packages/Kuruc_LoPalo_O_Connor_AEJ-Applied_2024_192427/WtPCoolerDay/analysis/data/retro_weather2.csv.

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:** verified; verification: verified; 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.

- `AEJ-Applied/Kuruc_LoPalo_O_Connor_AEJ-Applied_2024_192427/R/493_kuruc_lopalo_oconnor_figure.R` (126 lines)
- `AEJ-Applied/Kuruc_LoPalo_O_Connor_AEJ-Applied_2024_192427/R/493_kuruc_lopalo_oconnor_replicate.R` (282 lines)
- `AEJ-Applied/Kuruc_LoPalo_O_Connor_AEJ-Applied_2024_192427/verdict.md` (71 lines)
- `AEJ-Applied/Kuruc_LoPalo_O_Connor_AEJ-Applied_2024_192427/aeraej-493.md` (110 lines)