Tajik language
In 1929 Gorno-Badakhshan was attached to the newly formed republic of Tajikistan, and since that point, there has been a great deal of controversy surrounding the ethnic identity of the Pamiris. Some Tajik scholars claim Pamiri languages to be a dialects of Tajik language and there has been a long-running debate as to whether the Pamiris constituted a nationality separate from Tajiks. But there is a consensus amongst linguists that the Pamiri languages are East Iranian, a sub-group of Iranian languages while Tajik language which is Persian is included in Southwestern Iranian, another sub-group of Iranian languages. In the 1926 and 1937 Soviet censuses Rushani, Shugni and Wakhis were counted as separate nationalities. After 1937 these groups were required to register as Tajiks.