Editorial Contact
For language-page corrections, methodology questions, and source documentation requests, email:
editorial@worldlanguagescatalog.org
Response target: 3-5 business days.
Research and Partnerships
For university, newsroom, or policy partnerships, include scope, timeline, and citation requirements.
research@worldlanguagescatalog.org
Please include language ISO code(s) in the subject line when possible.
How to Submit a Data Correction
- Identify the page URL and language ISO 639-3 code.
- State exactly which statement is inaccurate.
- Provide verifiable references (publication, date, and link).
- Explain whether the issue affects L1 counts, classification, script, or vitality status.
Editorial Integrity Statement
WLC prioritizes source transparency and clear distinction between first-language (L1) and second-language (L2) estimates. Corrections are reviewed by the editorial team and reflected in page update notes when accepted.