Final answer:
Understanding and interpreting oral and written communication is a key aspect of language acquisition and has a strong influence on thought and cognition. Language can vary according to the medium of communication and between participants from different cultures or age groups.
Step-by-step explanation:
Research on language indicates that understanding and interpreting oral and written communication is a key aspect of language acquisition. Language is a communication system that consists of a lexicon and a system of grammar. It has a strong influence on thought and cognition, and the way language is used can vary according to the medium of communication, such as in-person or written communication. Additionally, language can vary between participants from different cultures or age groups.