The Expanded Graded Intergenerational Disruption Scale (EGIDS), developed by Lewis and Simons (2010), measures a language's status in terms of
endangerment or development.
The table below shows the various levels on the scale:
The EGIDS model has become widely known, cited in 555 publications as of August 2021.
References
{{Reflist
Endangered languages
2010 introductions
2010 in science