Original collectionUnder development

Under development — library extension. This report is part of the expanded-library work, not the original collection. Source preparation, methods and results are subject to revision.

Provisional eligibility assessment — under development. Deep DiD follow-up: Table A5 estimates treatment_binary in ppmlhdfe with crop/year effects; gen_patents_crops.do lines 69 and 86–92 define above-median 1964 exposure x post-1965. Genuine authored binary DiD, but the selected target is Poisson, not a linear ATT. Retain link function and specify the effect scale. This working assessment is not fully vetted and may change. See the report below for its recorded replication or assessment status. Provisional eligibility log

Labor Supply and Directed Technical Change: Evidence from the Termination of the Bracero Program in 1964

Shmuel San (2022). 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 · Provisional eligibility log · Assessment JSON · QMD · Reproduction code

Source design and template applicability

The patent PPML DiD uses foreign_per_64 interacted with post as a continuous exposure. The deposited state exposure aggregate is not the required crop-year patent panel; no exposure threshold is imposed.

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

23 distinct nonmissing values in exposure.

State-level Bracero exposure input; patent outcomes are not needed to count this treatment. N=51; missing=5. Frame: selected_source_data. Source: /Volumes/LAL_BAK/did-cardinality-work/packages/San_AEJ-Applied_2022_148101/data/input/dta/exposure_state.dta.

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: rebuild_required; verification: public data absent; preparation: needs_restricted_data. 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/San_AEJ-Applied_2022_148101/R/47_san_replicate.R (213 lines)
• AEJ-Applied/San_AEJ-Applied_2022_148101/verdict.md (51 lines)
• AEJ-Applied/San_AEJ-Applied_2022_148101/aeraej-47.md (176 lines)