Which term refers to a system of communication using sounds or symbols that enables an individual to express feelings, thoughts, ideas, and experiences?

The lexicon refers specifically to the vocabulary or collection of words within a language, encompassing the meanings, definitions, and usage of individual terms. While an essential component of language, the lexicon alone does not encapsulate the entire system of communication that enables expression of feelings, thoughts, and experiences.

Psycholinguistics is the interdisciplinary field that combines psychology and linguistics to study how language is acquired, processed, and represented in the human mind. It focuses on understanding the cognitive mechanisms underlying language use, including language production, comprehension, and development, rather than defining the overarching system of communication.

Heuristics are mental shortcuts or problem-solving strategies that simplify complex decision-making processes. They help individuals make quick judgments or decisions based on limited information, aiming for practical solutions rather than comprehensive expression of feelings, thoughts, or ideas. Heuristics do not encompass the holistic system of communication that language provides.