Tat and Talysh are two less-widely-used Iranian languages indigenous to Azerbaijan. Sociolinguistic research revealed that both languages are being displaced in some communities but coexist with Azerbaijani in others. Factors contributing to these differences include isolation, ethnic diversity, and economic opportunity. One other factor contributing to displacement is a desire to see children excel in school. This could well be the most important factor breaking transmission from one generation to the next. In light of this, it is important to document the language and culture while they are vital.
Clifton, John M.
"Do the Talysh and Tat languages have a future in Azerbaijan?,"
Work Papers of the Summer Institute of Linguistics, University of North Dakota Session: Vol. 49, Article 2.
Available at: https://commons.und.edu/sil-work-papers/vol49/iss1/2