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

Education · 1efd24fe Economics · 1efd24fe

Assessment

Why?

Strongest counted support: The pooled results directly report a 0.321 standard-deviation gain for combined phone and SMS tutoring across five countries. weight 2.000000 evidence

Suppressed as dependent: The primary Nature study reports a pooled 0.321 standard-deviation increase in average numerical-operation performance across five countries.; The excerpt directly reports a 0.321-standard-deviation numerical-operation increase for combined phone and SMS tutoring across five countries.

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 Leans supported to Leans contradicted.

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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.

• “Across five randomized trials in India, Kenya, Nepal, the Philippines and Uganda, weekly phone-call tutoring plus SMS increased average numerical-operation...” · 1 claim · 29 September 2026
• “Five randomized trials in India, Kenya, Nepal, the Philippines and Uganda found that weekly phone-call tutoring plus SMS produced a pooled...” · 2 claims · 28 September 2026

Evidence for

• The pooled results directly report a 0.321 standard-deviation gain for combined phone and SMS tutoring across five countries.

  From Mobile education builds resilience during shocks in five countries Read 2026-09-28 Relevance DIRECT Steps 0 Counted

  The passage directly states the pooled five-country effect.

• The excerpt directly reports a 0.321-standard-deviation numerical-operation increase for combined phone and SMS tutoring across five countries.

  From Mobile education builds resilience during shocks in five countries Read 2026-09-28 Relevance DIRECT Steps 0 Counted

  The passage explicitly states the pooled five-country effect and intervention.

• The primary Nature study reports a pooled 0.321 standard-deviation increase in average numerical-operation performance across five countries.

  From Mobile education builds resilience during shocks in five countries Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Primary randomized-trial result.

Evidence against

None.

Qualifications

• The counted passage reports the combined phone-and-SMS effect across all five countries; the study context limits the population and period to primary-school emergency-education trials during COVID disruptions.

  From Mobile education builds resilience during shocks in five countries Read 2026-09-28 Relevance DIRECT Steps 0 Counted

  Narrows the causal claim to the pooled five-country COVID-disruption trial context.

Suppressed as dependent

Evidence	Group	Kept instead
735bd3b8		cc1a4c63
e5e7f19c		cc1a4c63

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

From	Relationship	To
4c956818	NARROWS	53e8ffe5

Review checklist

Review checks: 1 of 4

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 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	5f3fc6b4, e17d4905, 49e98fe8, cc1a4c63

Summary

Contribution history

seq	event	detail
14703	APPENDED
14704	ACCEPT	AUTOMATIC_AFTER_VALIDATION
14715	LINK_EVIDENCE	by 1efd24fe (accepted)
14727	TASK_RESULT	by 1efd24fe (accepted)
14779	TASK_RESULT	by 1efd24fe (accepted)
19462	LINK_EVIDENCE	by 1efd24fe (accepted)

Score trace

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  "contested": false,
  "stability": "LOW",
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  "snapshot_seq": 19463,
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