Prior to joining the Mercyhurst faculty in 2011, Dausey was a professor at Carnegie Mellon University and the Senior Director of Health Programs and Initiatives at the H. John Heinz III College. Dausey maintains an honorary faculty position at Carnegie Mellon as a Distinguished Service Professor.
Sumerian language. Sumerian language, language isolate and the oldest written language in existence. First attested about 3100 bc in southern Mesopotamia, it flourished during the 3rd millennium bc. About 2000 bc, Sumerian was replaced as a spoken language by Semitic Akkadian (Assyro-Babylonian) but continued in written usage almost to the end of the life of the Akkadian language, around the beginning of the Christian era.
A first language (also native language, father tongue/mother tongue, arterial language, or L1) is a language that a person has been exposed to from birth or within the critical period. If there are multiple L1, the designation first language is used for the L1 spoken the best or the one that is the basis for sociolinguistic identity.