Among 775,323 scientists with full-text papers in PubMed Central, individual research portfolios spread across more fields after 2022: field entropy rose from 0.55 in 2022 to 0.71 in 2025 and the share entering a new field from 30.4% to 35.5%, more so for scientists in non-English-speaking low- and middle-income countries; the authors call the design descriptive.

SocioLens project,

Claim LD09-SL-C07 (v1.0)

Research opportunities this claim motivates

What this claim leaves open for research. Each is a hypothesis about a gap, not a finding.

Does language-model use narrow what whole fields study, including the social sciences?Individual portfolios spread across more fields after 2022, in a descriptive design.

Provenance and status

Claim type: Estimate
Publication status: Eligible for publication, with qualifiers: preprint
Verification state: Checked against the primary source; the source is a preprint. Who checked this claim is not recorded for it; claim checks so far were AI-led, and no person has checked claims against their sources.
Does not license: A causal effect of language models (the design is “not meant to estimate the causal effect of LLM adoption”), or anything about field-wide coverage
Limitations: Preprint; descriptive; individual breadth can rise while fields converge on the same areas
Source (as cited): Zheng, Hong, Liu & Ni, “Scientific exploration, collaboration and labor division in the large language model era,” arXiv:2607.20923, July 2026
Source type: Preprint (recorded as “Preprint”)
Institutional position: Independent academic (University of Wisconsin–Madison-led)
Maturity of the evidence: Emerging evidence
Recorded date: 15 October 2026
Currentness / correction: This is the current version. No correction or concern is recorded on its sources.

Sources this version cites

Zheng, Hong, Liu & Ni, “Scientific exploration, collaboration and labor division in the large language model era,” arXiv:2607.20923, July 2026 (Preprint)
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Version

This is the current version, v1.0. Earlier versions stay available, and their records never change.

Versions: v1.0 · current

Raw record: every recorded field, with its coded values

All 25 canonical Claim fields, verbatim, with the coded values derived from them. The plain-language labels above are read from these.

Claim type (coded): ESTIMATE (as printed: “ESTIMATE”)
Publication status (coded): ELIGIBLE (PREPRINT) (as printed: “ELIGIBLE WITH PREPRINT QUALIFIER”)
Verification state (coded): CONTENT_VERIFIED_PRIMARY (PREPRINT)
Source type (coded): PREPRINT
Maturity (coded): EMERGING

#	Canonical field	Canonical value (verbatim)	Normalized (Claim Value Vocabulary v1.0.2)
1	CLAIM ID	LD09-SL-C07	—
2	PUBLIC-FACING CLAIM	Among 775,323 scientists with full-text papers in PubMed Central, individual research portfolios spread across more fields after 2022: field entropy rose from 0.55 in 2022 to 0.71 in 2025 and the share entering a new field from 30.4% to 35.5%, more so for scientists in non-English-speaking low- and middle-income countries; the authors call the design descriptive.	—
3	CLAIM TYPE	ESTIMATE	base_types: ESTIMATE
4	RESEARCH STRAND	A — Science and scholarship	—
5	MATURITY	EMERGING	states: EMERGING
6	SOURCE	Zheng, Hong, Liu & Ni, “Scientific exploration, collaboration and labor division in the large language model era,” arXiv:2607.20923, July 2026	source_ids: SRC-SL-ZHENG-HONG-LIU-NI-ARXIV-2607-20923
7	SOURCE TYPE	Preprint	classes: PREPRINT
8	INSTITUTIONAL POSITION	Independent academic (University of Wisconsin–Madison-led)	—
9	SCOPE	Mostly biomedical scientists	—
10	DESIGN	Descriptive trend analysis linking full texts to publication histories, with a text proxy for AI-assisted writing	—
11	SAMPLE / DATASET	775,323 scientists; contribution statements for 137,120 papers	—
12	MODEL / TOOL / VERSION	A text-based signal of AI-assisted writing	—
13	COMPARATOR	Pre-2023 trends	—
14	MAIN RESULT	Field entropy 0.55 to 0.71 (2022 to 2025); new-field entry 30.4% to 35.5%; authors with high AI-writing signals were already more exploratory before language models and the gap widened; conceptual and management roles in papers declined	—
15	INFERENTIAL TARGET	Whether individual scientists’ research has broadened or narrowed in the language-model era	—
16	DOES NOT LICENSE	A causal effect of language models (the design is “not meant to estimate the causal effect of LLM adoption”), or anything about field-wide coverage	—
17	VERIFICATION STATE	CONTENT VERIFIED PREPRINT	state: CONTENT_VERIFIED_PRIMARY · qualifiers: PREPRINT · verified_by: UNKNOWN
18	LIMITATIONS	Preprint; descriptive; individual breadth can rise while fields converge on the same areas	—
19	CONTRADICTORY / SUPPORTING SOURCES	Field-level contraction: LD09-SL-C02	—
20	GEOGRAPHY / LANGUAGE	Global / English	—
21	DISTRIBUTIONAL LEDGER	Broadening was larger for scientists in non-English-speaking low- and middle-income countries and for established scientists	—
22	R01 / FIELD-MAP LINKS	LD-09, D3	—
23	WHAT WOULD CHANGE THIS CLAIM?	A causal design, or evidence that individual broadening moves scientists into the same few areas	—
24	PUBLICATION STATUS	ELIGIBLE WITH PREPRINT QUALIFIER	state: ELIGIBLE · qualifiers: PREPRINT
25	RECORDED DATE	2026-10-15	—

Field 22 references resolved against Field Map v0.2: LD-09 (LIVING_DEBATE); D3 (DOMAIN)

The sources as recorded, with their record IDs and coded source types:

Pinned Sources (field 6, version-specific)

“Zheng, Hong, Liu & Ni, “Scientific exploration, collaboration and labor division in the large language model era,” arXiv:2607.20923, July 2026” → Zheng et al. (2026), “Scientific exploration…” (SRC-SL-ZHENG-HONG-LIU-NI-ARXIV-2607-20923--v1.0) — Zheng, Hong, Liu & Ni, “Scientific exploration, collaboration and labor division in the large language model era,” arXiv:2607.20923, July 2026; class PREPRINT (explicit public provenance pin)

Cited by Living Debate versions

Individual gain, collective narrowing? Does AI make science, creative work and shared knowledge more alike? (v0.1) LD-09

Cite this page

SocioLens project. (2026, October 15). Among 775,323 scientists with full-text papers in PubMed Central, individual research portfolios spread across more fields after 2022: field entropy rose from 0.55 in 2022 to 0.71 in 2025 and the share entering a new field from 30.4% to 35.5%, more so for scientists in non-English-speaking low- and middle-income countries; the authors call the design descriptive [Claim LD09-SL-C07, version v1.0]. SocioLens. https://sociolens-web.pages.dev/claims/ld09-sl-c07/v1.0/

@misc{sociolens_ld09_sl_c07_v1_0,
  author = {{SocioLens project}},
  title = {Among 775,323 scientists with full-text papers in PubMed Central, individual research portfolios spread across more fields after 2022: field entropy rose from 0.55 in 2022 to 0.71 in 2025 and the share entering a new field from 30.4\% to 35.5\%, more so for scientists in non-English-speaking low- and middle-income countries; the authors call the design descriptive.},
  year = {2026},
  date = {2026-10-15},
  howpublished = {\url{https://sociolens-web.pages.dev/claims/ld09-sl-c07/v1.0/}},
  note = {Claim LD09-SL-C07, version v1.0}
}

The link points to this version, whose record never changes. For a finding, cite the original study as well: SocioLens summarizes research and does not replace it.

Research-of-record provenance

Materialized by sociolens-materializer 0.6.0 at 2026-09-28T20:00:00.000Z; normalization contract SocioLens — Claim Value Vocabulary v1.0.2 — Pre-Spike Materialization Contract (v1.0.2). Content seal SHA-256 c02c7041ac9c585653fa4efeee0c684019c126aba0bba3fdc7114f267937db4a.

Repository-authored inputs (not Drive exports)

SocioLens claim — LD09-SL-C07 v1.0 (v1.0) — written in the SocioLens repository by Project Lead (Claude, AI) on 2026-10-15; no Drive identity exists. Authority: AGENTS.md "Authority" (the Project Lead decides research content within the research-integrity rules) and the Owner's choice in the SocioLens project chat on 15 October 2026 to build the LD-09 debate; a new Claim, first version, written from the project's LD-09 source notes, checked against full texts or official abstracts. Block “ENTRY 07 — LD09-SL-C07” SHA-256 1fc62a3e991639646709cd00d5da362a7fa7c923f40993852ede3ca3888ef0f7; fixture fixtures/authored/claims/LD09-SL-C07--v1.0.

Builder decisions (not Drive data)

VERSION = v1.0 — basis: Claim version taken from the repository-authored claim fixture version (SocioLens claim — LD09-SL-C07 v1.0); the first version of a new Claim of the LD-09 debate
CURRENT_POINTER = true — basis: repository-authored claim "SocioLens claim — LD09-SL-C07 v1.0" (Project Lead (Claude, AI), 2026-10-15); basis: AGENTS.md "Authority" (the Project Lead decides research content within the research-integrity rules) and the Owner's choice in the SocioLens project chat on 15 October 2026 to build the LD-09 debate; a new Claim, first version, written from the project's LD-09 source notes, checked against full texts or official abstracts
FIELD_6_SOURCE_REFERENCE = SRC-SL-ZHENG-HONG-LIU-NI-ARXIV-2607-20923--v1.0 — basis: field 6 of ENTRY 07 — LD09-SL-C07 cites "Zheng, Hong, Liu & Ni, “Scientific exploration, collaboration and labor division in the large language model era,” arXiv:2607.20923, July 2026"; the only field-6 segment of this ClaimVersion's repository-authored ledger block.
SOURCE_PROVENANCE_PIN = SRC-SL-ZHENG-HONG-LIU-NI-ARXIV-2607-20923--v1.0 — basis: explicit version-pinned public provenance of this ClaimVersion (Amendment v1.2 §6): the pinned field-6 Source record "Zheng, Hong, Liu & Ni, “Scientific exploration, collaboration and labor division in the large language model era,” arXiv:2607.20923, July 2026".