رمزگردانی؛ چرایی و چگونگی آن

During the past twenty years, an increasing interest toward codeswitching phenomenon has been made. Code-switching in 1950 and 1960 decades, had little importance but, some of the pioneers in 1970 decade paid attention to its syntactic and sociolinguistics aspects, so that many researchers in the fields of syntax, sociolinguistic and 
psycholinguistic inclined to it. Code-switching, is the synchronous or altenative use of two languages. In other words, code-switching is the act of combining or changing between the elements of more than one language in a speech communication. It belongs not to the langue realm but to the parole one. This article aims to give a division of 
different types of code-switching and determine the quality of this process and its motivations.