I am a university student, so I can not use vernacular

Studies of social variations in language grow out of studies of regional variations. It is in order to remove the limits and repair the flaws exist in regional variations. In this article, we will see how sociolinguists turned to work on social dialects through quantitative researches on linguistic variables among groups of people with different social class, age, sex, etc. We, also, review some findings of Labov's research. At last, we will talk about some other sociolinguistic patterns which affect way of using language