1. The document discusses how language reflects and influences culture and thinking. Different languages have words for concepts that other languages don't, showing cultural differences.
2. Cultural differences are also seen in how language is used pragmatically. Some cultures teach skills through verbal instruction while others use observation. Cultures also differ in encouraging independent versus cooperative learning.
3. Differences in social roles and contexts like home versus school also influence language acquisition and use through nonverbal cues, shared experiences, and expectations of children's speech.