| name | jmcb-empirical-design |
| description | Use when bank/central-bank data construction, measurement, or sample design is the bottleneck for a Journal of Money, Credit and Banking (JMCB) manuscript. Hardens how the dataset is built and measured so the identification can do its job; it does not re-argue the causal strategy or write prose. |
Empirical Design (jmcb-empirical-design)
When to trigger
- The dataset is assembled from Call Reports, Y-9C, supervisory, credit-register, or central-bank sources and the construction is under-documented
- The key variable (a "monetary shock," a "bank capital ratio," a "credit-supply" measure) is a constructed object whose definition matters for the result
- Sample period, window, or frequency choices are not motivated and could be driving the finding
- Restricted-access bank/central-bank data are involved and the access path is unstated
- A referee questioned whether the measurement, not the mechanism, produces the result
The JMCB measurement bar
JMCB carries a deep replication heritage â the journal's own 1980sâ2000s Data Archive episodes (DewaldâThursbyâAnderson; the 2006 "Got Replicability?" audit) made it acutely aware that monetary/banking results often hinge on how series are spliced, deflated, and aligned. So referees scrutinize construction and timing: how a series is seasonally adjusted, how regulatory definitions changed mid-sample, how a bank merger reshapes a panel, and whether the announcement window for a monetary surprise is defensible. The standard is that a reader could rebuild the central variables from the description.
Construction craft by data type
Bank micro-data (Call Reports / Y-9C / credit registers)
- Identifier hygiene: track RSSD/entity IDs through mergers and acquisitions; state how you treat acquirers vs. targets so a merger does not masquerade as growth.
- Balance-sheet ratios: define capital, liquidity, and lending consistently across the sample; note Basel/regulatory regime changes that redefine the numerator or denominator mid-panel.
- Winsorize/trim extreme ratios and state the rule; report how many bank-quarters are dropped and why.
Monetary / macro series
- Real-time vs. revised data: for policy questions use the vintage the policymaker saw (ALFRED / real-time databases); say which and why.
- Frequency and alignment: state how high-frequency surprises are aggregated to the estimation frequency and how announcement timestamps map to observations.
- Splicing and deflation: document base years, deflators, and any series breaks (e.g., reserve-regime or reference-rate transitions).
Central-bank / supervisory / restricted data
- Access path: name the RDC / central-bank data room / register and the disclosure constraints; this scopes what the replication package can contain.
- Confidentiality: state aggregation/masking rules and how they affect inference.
Sample and specification hygiene
- Motivate the sample window from the institution/policy, not from where significance appears.
- Pre-specify the frequency (the local-projection horizon, the panel frequency) and show the headline survives nearby choices.
- Document missing-data and entry/exit handling so survivorship does not drive results.
The construction decisions referees probe most
A JMCB referee will mentally re-run your data build and ask where it could have gone wrong. The recurring pressure points:
- Seasonal adjustment and deflation. State the SA method and base year; an unstated SA choice can manufacture or erase a cyclical pattern.
- Reference-rate and regime transitions. LIBORâSOFR, reserve-regime changes, and the move to ample reserves all break series; splice them explicitly and note the break date.
- Treatment timing. For a policy/regulation study, the exact effective date and any anticipation window matter; misdated treatment biases event studies.
- Aggregation level. Holding-company (Y-9C) vs. bank (Call Report) reporting answers different questions; pick the level that matches the mechanism and say why.
- Survivorship. Failed and acquired banks leaving the panel during a crisis is not random; show the result is not an artifact of who exits.
From measurement to a credible replication path
Measurement and reproducibility are the same discipline at JMCB. As you finalize the data build, write the construction in enough detail that the eventual replication package â or, for restricted data, the documented access path â lets someone rebuild the central variables. Note which inputs are public (Call Reports, Y-9C, FRED, ALFRED real-time vintages) and which require restricted access (supervisory panels, credit registers, RDC), since this determines what jmcb-internet-appendix can include. A measurement section that doubles as a reproduction recipe pre-empts the journal's signature replication concern.
Execution bridge (StatsPAI / Stata MCP)
Run the asset-pricing battery, don't just specify it. Full map:
execution-with-mcp. JMCB is monetary/banking â macro time series + bank panels; local projections for the macro lane, DiD/IV for the bank lane.
- Factor regressions / time-series alphas:
feols with the right SEs (NeweyâWest /
clustered) â read the alpha and t off the return.
- Factor-zoo haircut: after disclosing how many signals were screened, apply
romano_wolf / benjamini_hochberg and report the alpha that survives.
- FamaâMacBeth + Shanken EIV are Stata-canonical â run via
mcp__stata-mcp__stata_do
with the vendored resources/code/ (asreg / xtfmb).
- Exhibits:
etable; hand formatting to the tables/figures skill.
Report the economic magnitude (bps/month alpha, Sharpe gain); full factor grid â appendix.
JF execution walkthrough.
Checklist
Anti-patterns
- A constructed "shock" or ratio whose definition is buried, so the result cannot be reproduced
- Bank mergers silently inflating growth because acquirer/target handling is unspecified
- Using revised data for a real-time policy question (or vice versa) without saying so
- A sample window or estimation horizon that quietly maximizes significance
- Restricted-data results with no statement of what the replication package can and cannot include
- Splicing series across a regime break (reserve regime, reference-rate transition) without noting it
Public-data first, restricted-data when the mechanism demands it
Not every JMCB question needs supervisory access. Call Reports and Y-9C (bank balance sheets and income), FRED and ALFRED (macro series and real-time vintages), and disclosed monetary-surprise datasets carry a large share of publishable transmission and banking work, and they make the replication path trivial. Reserve restricted data (credit registers, supervisory loan-level panels, RDC products) for mechanisms that genuinely require within-firm-across-bank or loan-level variation. Choosing the lightest data that identifies the mechanism is both a feasibility win and a reproducibility win.
Worked vignette (illustrative)
A paper measures the deposits channel using bank-level deposit betas. A referee notes the panel grows 30% over the sample and asks whether mergers drive it. The fix: build a merger-adjusted panel that aggregates acquirer+target pre-merger, recompute betas, and show the deposit-beta gradient is unchanged (e.g., high-branch-density banks pass through 40% of rate hikes vs. 70% for low-density, illustrative). Documenting the RSSD crosswalk and the winsorization rule turns a fragile measurement into a defensible one.
Output format
ăJournalăJournal of Money, Credit and Banking
ăSkillăjmcb-empirical-design
ăData sourcesăCall Report / Y-9C / register / central-bank / macro series
ăKey constructed variableădefinition a reader could rebuild
ăTiming/measurement riskăreal-time vs revised / window / regime change handled
ăSample hygieneăM&A, entry/exit, winsorizing, counts
ăAccess constraintsărestricted-data path + disclosure limits (if any)
ăNext skillăjmcb-robustness
