This document discusses how social class influences language patterns and speech variables. Higher social classes tend to use more standard and formal grammar forms, while lower social classes may use variants like H-dropping, replacing "ing" with "in", different pronunciations of "r", and L-deletion. Social class can create sharp stratification in language, with the middle and lower classes distinguished by their use of grammar forms like singular vs. plural verbs. Negative concord, using multiple negative forms, is also characteristic of some vernacular dialects associated with lower social classes.