This document provides an overview of key concepts in sociolinguistics. It discusses how sociolinguistics examines language variation according to social factors like age, gender, education level, occupation, and social class. Some key findings are:
1) Social dialects vary regionally and according to social class. Working class speakers tend to use features that differ from middle class speakers, marking social status.
2) Social markers like pronunciation patterns (e.g. dropping /r/ sounds) can signify membership in social groups. Features associated with less education often indicate lower class.
3) Basil Bernstein identified "elaborated codes" used by middle/upper classes that emphasize individual expression, and "restricted codes