Sociolinguistic focuses on how language varies based on factors like sex and age. The document discusses differences in how men and women use language in Western societies. Women tend to use more standard language forms while men use more vernacular forms. This is because women aim to gain social status through standard language and are expected to behave better. Women also use language to avoid offending men as subordinate groups. The roles of social status, expected behavior, and subordination help explain linguistic differences between sexes.