INDEPENDENT RESEARCH / 001

Reading the
record.
Checking the math.

Who produces knowledge, how it travels, and what its evidence can support. A research notebook, starting with economics.

Explore the bibliometrics ↗
THE CHANGING RESEARCH TEAM
1.43 → 3.14
1970s / 2020s
432101970s1990s2020s
Mean authors per paper · NBER author IDs
October 2026 snapshot. The current decade is incomplete.
35,897working papers indexed
1,660papers with extracted full text
137,326printed results extracted
October 2026 snapshot
Bibliometrics

Who writes economics, and who gets cited?

20,751 author IDs. 88,245 author credits. The most prolific 207 authors account for 17.9% of those credits.

A descriptive view of authorship concentration, team size and citation coverage in the NBER working-paper series. Counts keep papers, people and author credits separate.

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October 2026 snapshot
Arithmetic audit

Do the regression tables add up?

137,326 extracted results from 709 papers with checkable tables.

The existing audit extracted text from 1,660 papers and compared printed coefficients, standard errors and significance stars. It also examined results near significance thresholds. These are automated flags requiring verification.

Read the existing report →

October 2026 snapshot
Citation networks

How far do citations travel?

104,417 references link one NBER paper to another; 18.9% of those links share at least one author.

The graph covers references recorded by OpenAlex, restricted to NBER-to-NBER links. Its within-series citation patterns cannot be generalized to all citations or treated as evidence of collusion.

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October 2026 snapshot
Measurement

What does retirement mean in the literature?

184 model-read papers; 134 empirical records retained for analysis.

The existing Retirement and Social Security study compares what papers measure, where their data come from and how they define retirement. Model classifications and a second-coder sample are reported separately.

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October 2026 snapshot
Literature dynamics

Which literatures keep growing, and being read?

Publication growth, citation rank and sensitivity of reported results.

The existing report groups papers by literature and compares uptake across issue years. These exploratory measures depend on classification, citation coverage and the age of the papers.

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How to read this work

These are different views of one NBER project, not five independent replications. The corpus includes a random sample and deliberately highly cited samples; only the appropriate sampling frame supports a population estimate.

Read the original project essay. The next stage is a documented calibration set and manual adjudication of flags before extending claims to other literatures.