Evidence record

Bishop DVM, Snowling MJ, Thompson PA, Greenhalgh T; CATALISE-2 consortium. Phase 2 of CATALISE: a multinational and multidisciplinary Delphi consensus study of problems with language development: Terminology. Journal of Child Psychology and Psychiatry. 2017;58(10):1068-1080.

A governed Evidence source projected for the exact ND Oracle claims it bears on.

A source is not a conclusion. Read the exact claim, role, context, limitations and uncertainty together. This record is not a recommendation, diagnosis, legal decision or quality score.

Source record

Source kind: peer reviewed
Evidence model: Accepted legacy v0.1 embedded source
Accessed: 2026-08-12
Oracle last reviewed: 2026-08-12

Open source

Claims this source bears on

In the CATALISE framework widely used in English-speaking research and services, DLD is a persistent developmental language disorder with meaningful everyday impact that is not associated with a known biomedical cause.

Claim reference: developmental-language-disorder#dld-claim-core · Confidence: high · Evidence role: Legacy source route — no v0.2 contribution role inferred

Evidence limitations

None recorded.

Claim uncertainty

How should ND Oracle handle international systems that use DLD more broadly or differently from the CATALISE framework?
Where should the public-facing boundary be drawn between DLD, speech-sound disorder, dyslexia and language disorder associated with conditions such as autism or hearing loss?

Under CATALISE, risk factors do not by themselves rule out DLD and DLD can co-occur with some other neurodevelopmental disorders such as ADHD; this does not mean every language difficulty occurring with another diagnosis is DLD.

Claim reference: developmental-language-disorder#dld-claim-cooccurrence · Confidence: high · Evidence role: Legacy source route — no v0.2 contribution role inferred

Evidence limitations

None recorded.

Claim uncertainty

Where should the public-facing boundary be drawn between DLD, speech-sound disorder, dyslexia and language disorder associated with conditions such as autism or hearing loss?
How should ND Oracle handle international systems that use DLD more broadly or differently from the CATALISE framework?

DLD terminology is not completely uniform internationally: some current clinical guidance uses the term more broadly than CATALISE, so ND Oracle should state which framework a definition follows rather than presenting one usage as universal.

Claim reference: developmental-language-disorder#dld-claim-international-variation · Confidence: high · Evidence role: Legacy source route — no v0.2 contribution role inferred

Evidence limitations

None recorded.

Claim uncertainty

How should ND Oracle handle international systems that use DLD more broadly or differently from the CATALISE framework?

Funding and conflicts

None recorded.

Evidence projection provenance

Evidence synthesis accepted by the owner on 2026-08-12 and promoted from frozen Batch A candidate blob fc99e429d6464523b12e5aa8af804fe5523d20a1; candidate history remains preserved.

Public projection ID: legacy-developmental-language-disorder-dld-source-catalise