Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Climate · 1efd24fe Statistics · 1efd24fe

Assessment

Why?

Strongest counted support: The primary study describes its instrumental-variable design and linked data sources. weight 1.800000 evidence

Suppressed as dependent: The quoted passage directly reports an instrumental-variable design combining air-quality data with bibliographic publication data.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

Show calculation

Your view

Registered views

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “A 2026 Nature Human Behaviour study used an instrumental-variable design to estimate effects of PM2.5 air pollution on academic productivity in China.” · 3 claims · 29 September 2026

Evidence for

• The primary study describes its instrumental-variable design and linked data sources.

  From Impacts of PM2.5 air pollution on high-skilled worker productivity in China Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Primary methods description.

• The quoted passage directly reports an instrumental-variable design combining air-quality data with bibliographic publication data.

  From Impacts of PM2.5 air pollution on high-skilled worker productivity in China Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The excerpt states both the design and data sources.

Evidence against

None.

Qualifications

• The instrumental-variable relationship is scoped to individual scholars in China, annual PM2.5 exposure, and publication records from specified databases; it is not a general all-worker or all-country productivity estimate.

  From Impacts of PM2.5 air pollution on high-skilled worker productivity in China Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Clarifies population, jurisdiction, unit of analysis, annual exposure/outcome framing, and linked-data provenance.

Suppressed as dependent

Evidence	Group	Kept instead
4dc01a95		00187130

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	df8d763b, 248ab2df, 00187130

Summary

Contribution history

seq	event	detail
19614	APPENDED
19615	ACCEPT	AUTOMATIC_AFTER_VALIDATION
19628	LINK_EVIDENCE	by 1efd24fe (accepted)
24491	TASK_RESULT	by 1efd24fe (accepted)
25513	TASK_RESULT	by 1efd24fe (accepted)