Linguistic input refers to the language that an individual encounters or interacts with, which can come in various forms such as spoken language, written text, or visual representations of language. Researchers studying linguistic input may investigate how language is processed and understood by individuals, especially in the context of language acquisition and learning. They may also examine how linguistic input influences language development, cognitive processing, and communication abilities. Additionally, researchers may explore how different characteristics of linguistic input, such as complexity, frequency, or context, impact language processing and comprehension. Overall, the study of linguistic input provides valuable insights into the intricacies of language use and comprehension.