Linguistics Society of Iran Language and Linguistics 23223847 1 1 2005 05 22 Significance of Dialect Studies in Historical Linguistics Significance of Dialect Studies in Historical Linguistics 115 127 1581 FA Mehrdad Naghzguy Kohan Journal Article 2015 08 06 This article examines the relation of dialectology as a discipline in its own right with historical linguistics. There are however some brief remarks on the relation of the former with other branches of linguistic studies, like those of socio-linguistics, and typology. In order to trace the connection and interrelation of historical linguistics and dialectology and their probable influences on each other, efforts are made to provide the reader with some information on the origin of dialectology and its emergence as a separate discipline. In this context a comparison is made as to the aims and methods used in both disciplines. In almost all discussions, examples are cited from Persian and other Iranian languages. Some evidences are also given to illustrate the earliest interests of Iranians in different dialects. This takes us back to as early as 12^th century. In the remaining part of the article two instances of the practical uses of dialectology in diachronic studies of Persian language are exemplified. This article examines the relation of dialectology as a discipline in its own right with historical linguistics. There are however some brief remarks on the relation of the former with other branches of linguistic studies, like those of socio-linguistics, and typology. In order to trace the connection and interrelation of historical linguistics and dialectology and their probable influences on each other, efforts are made to provide the reader with some information on the origin of dialectology and its emergence as a separate discipline. In this context a comparison is made as to the aims and methods used in both disciplines. In almost all discussions, examples are cited from Persian and other Iranian languages. Some evidences are also given to illustrate the earliest interests of Iranians in different dialects. This takes us back to as early as 12^th century. In the remaining part of the article two instances of the practical uses of dialectology in diachronic studies of Persian language are exemplified. https://lsi-linguistics.ihcs.ac.ir/article_1581_7ccb6919e0707aa6a8281aea2e1c30b5.pdf