Replication & Data Policy (jet-replication-and-data-policy)
When to trigger
- Your JET paper includes numerical examples, simulations, or computed results and you want to share
them well
- You are checking what JET requires for data/code at submission or acceptance
- You need to get the generative-AI disclosure right
What JET actually requires
- No journal-run replication archive. Unlike empirical AEA / Econometric Society journals, JET has
no JAE-Data-Archive-style replication archive. Most JET papers are pure theory, so the main
reproducibility object is the proof and any supplementary appendix.
- Elsevier Option C applies when research data exist. Deposit research data in a relevant
repository and cite/link it, or state why the data cannot be shared. Data statements are supported
in the submission flow and appear with the published article.
- Pure theorem papers still need a clear statement. If there are no external research data and no
computation, say so plainly. If there are numerical examples, simulations, or computer-assisted
proof steps, make those artifacts reproducible and link/deposit them where appropriate.
- Generative-AI disclosure is required: authors must declare any use of generative AI in manuscript
preparation at submission. Reviewers and editors are prohibited from using generative-AI tools
during evaluation.
Reproducible-computation playbook (when the paper has computation)
JET's Option C rule is data-focused, but for a theory paper any numerical content should still be
reproducible because it strengthens the paper and pre-empts referee doubt:
What to package, by content type
| Computational content in the paper |
Artifact worth sharing |
Channel that fits |
| Symbolic verification of closed forms (e.g., checking eq. (7) of a screening model) |
one SymPy/Mathematica script per theorem |
repo link in the data statement |
| Counterexample found by search |
the search code plus a certificate script confirming the final example violates the conclusion |
repo; the certificate logic also goes in the paper |
| Computed equilibria (e.g., a numerical fixed point for a dynamic-contract example) |
solver script with tolerances and pinned environment |
repo or Mendeley Data |
| Experimental/empirical test of the theory (rare at JET) |
data, cleaning, and analysis scripts |
repository / Mendeley Data / Data in Brief, with Option C statement |
| Pure theory, no computation |
no archive to manufacture |
no-data statement |
Supplementary-appendix culture (the theory analogue of replication)
- At a theorem-proof journal, the unit of "replication" is the omitted proof, not a dataset.
Long technical arguments go to an online appendix / supplementary file the referee can read.
- Make the supplementary appendix self-contained in notation and citable by numbered
cross-references from the main text (e.g., "Appendix S.2"), so checking it never requires
re-deriving the body.
- If any proof step is computer-assisted — exhaustive finite-case checking, interval
arithmetic, symbolic simplification — say so inside the proof and ship the checker; the step is
only as credible as a referee's ability to re-run it.
- Where the proofs live (in-PDF appendix vs separate supplementary file) varies; confirm against
the journal's current author guidelines before splitting files.
Companion README template
README — companion code for "<title>" (JET submission)
verify_thm2_bound.py → re-derives eq. (7)–(9); confirms the Theorem 2 bound is attained (Example 1)
search_counterexample.jl → finds the Example 3 economy; seed 20250114; runtime < 1 min
check_thm4_cases.py → exhaustive check of the 12 finite cases cited in Appendix B, Step 3
env: requirements.txt / Manifest.toml (pinned)
Every reported number in the paper appears in the output of exactly one script above.
Anti-patterns
- Assuming JET has a journal-run replication archive — it does not
- Treating Option C as optional when the manuscript uses shareable research data
- Reporting computed numbers no script can reproduce
- Omitting the generative-AI declaration at submission
- Treating the optional data statement as a substitute for a checkable proof — the proof carries the paper
Output format
【Has data/computation?】none / data / computation / both
【Option C】repository citation/link, or no-data/cannot-share statement? [Y/N]
【Reproducible】master script + pinned env + seeds + README? [Y/N]
【AI disclosure】declared at submission? [Y/N]
【Next】jet-submission
Source: brycewang-stanford/Awesome-Journal-Skills → Journal-of-Economic-Theory-Skills/skills/jet-replication-and-data-policy/SKILL.md
1---2name: jet-replication-and-data-policy3description: Use when handling the Journal of Economic Theory (JET) data/code expectations — JET is theorem-proof oriented, but Elsevier Option C applies when research data exist: deposit/cite/link data in a repository or explain why sharing is not possible. Focuses on reproducible computation when a paper has any, plus generative-AI disclosure. Light by design.4---567# Replication & Data Policy (jet-replication-and-data-policy)89## When to trigger1011- Your JET paper includes numerical examples, simulations, or computed results and you want to share12 them well13- You are checking what JET requires for data/code at submission or acceptance14- You need to get the generative-AI disclosure right1516## What JET actually requires1718- **No journal-run replication archive.** Unlike empirical AEA / Econometric Society journals, JET has19 no JAE-Data-Archive-style replication archive. Most JET papers are pure theory, so the main20 reproducibility object is the proof and any supplementary appendix.21- **Elsevier Option C applies when research data exist.** Deposit research data in a relevant22 repository and cite/link it, or state why the data cannot be shared. Data statements are supported23 in the submission flow and appear with the published article.24- **Pure theorem papers still need a clear statement.** If there are no external research data and no25 computation, say so plainly. If there are numerical examples, simulations, or computer-assisted26 proof steps, make those artifacts reproducible and link/deposit them where appropriate.27- **Generative-AI disclosure is required:** authors must declare any use of generative AI in manuscript28 preparation **at submission**. Reviewers and editors are **prohibited** from using generative-AI tools29 during evaluation.3031## Reproducible-computation playbook (when the paper has computation)3233JET's Option C rule is data-focused, but for a theory paper any numerical content should still be34reproducible because it strengthens the paper and pre-empts referee doubt:3536- [ ] One **master script** regenerates every reported number, table, and figure from scratch37- [ ] Environment pinned (`requirements.txt`, `Project.toml`/`Manifest.toml`, recorded toolbox versions)38- [ ] **Seeds set and reported** for any stochastic illustration39- [ ] A short README mapping each script to the theorem/figure it supports40- [ ] If shared, choose **one** channel (repo link / Mendeley Data / Data in Brief) and link it in the41 data statement4243## What to package, by content type4445| Computational content in the paper | Artifact worth sharing | Channel that fits |46|---|---|---|47| Symbolic verification of closed forms (e.g., checking eq. (7) of a screening model) | one SymPy/Mathematica script per theorem | repo link in the data statement |48| Counterexample found by search | the search code plus a certificate script confirming the final example violates the conclusion | repo; the certificate logic also goes in the paper |49| Computed equilibria (e.g., a numerical fixed point for a dynamic-contract example) | solver script with tolerances and pinned environment | repo or Mendeley Data |50| Experimental/empirical test of the theory (rare at JET) | data, cleaning, and analysis scripts | repository / Mendeley Data / Data in Brief, with Option C statement |51| Pure theory, no computation | no archive to manufacture | no-data statement |5253## Supplementary-appendix culture (the theory analogue of replication)5455- At a theorem-proof journal, the unit of "replication" is the **omitted proof**, not a dataset.56 Long technical arguments go to an online appendix / supplementary file the referee can read.57- Make the supplementary appendix **self-contained in notation** and citable by numbered58 cross-references from the main text (e.g., "Appendix S.2"), so checking it never requires59 re-deriving the body.60- If any proof step is **computer-assisted** — exhaustive finite-case checking, interval61 arithmetic, symbolic simplification — say so inside the proof and ship the checker; the step is62 only as credible as a referee's ability to re-run it.63- Where the proofs live (in-PDF appendix vs separate supplementary file) varies; confirm against64 the journal's current author guidelines before splitting files.6566## Companion README template6768```text69README — companion code for "<title>" (JET submission)70verify_thm2_bound.py → re-derives eq. (7)–(9); confirms the Theorem 2 bound is attained (Example 1)71search_counterexample.jl → finds the Example 3 economy; seed 20250114; runtime < 1 min72check_thm4_cases.py → exhaustive check of the 12 finite cases cited in Appendix B, Step 373env: requirements.txt / Manifest.toml (pinned)74Every reported number in the paper appears in the output of exactly one script above.75```7677## Anti-patterns7879- Assuming JET has a journal-run replication archive — it does not80- Treating Option C as optional when the manuscript uses shareable research data81- Reporting computed numbers no script can reproduce82- Omitting the generative-AI declaration at submission83- Treating the optional data statement as a substitute for a checkable proof — the proof carries the paper8485## Output format8687```88【Has data/computation?】none / data / computation / both89【Option C】repository citation/link, or no-data/cannot-share statement? [Y/N]90【Reproducible】master script + pinned env + seeds + README? [Y/N]91【AI disclosure】declared at submission? [Y/N]92【Next】jet-submission93```9495---9697**Source:** [`brycewang-stanford/Awesome-Journal-Skills`](https://github.com/brycewang-stanford/Awesome-Journal-Skills) → `Journal-of-Economic-Theory-Skills/skills/jet-replication-and-data-policy/SKILL.md`
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