Expanded Graded Intergenerational Disruption Scale

The Expanded Graded Intergenerational Disruption Scale (EGIDS), developed by Lewis and Simons (2010), measures a language's status in terms of endangerment or development.

[1] [2] The table and image below shows the various levels on the scale: The EGIDS model has become widely known, cited in 555 publications as of August 2021.

[3]

Diagram of the EGIDs language endangerment scale
Diagram of the EGIDs language endangerment scale