Most buyers will also be in an emotional state. If you can remember that you are selling not just a piece of property but also an image, a dream and a lifestyle, you'll be more likely to put in the extra effort of staging and perhaps some minor remodeling to get top dollar for your home.
The branch of linguistics concerned with linguistic performance, that is, the production and comprehension of speech (or of sign language by the deaf), is called psycholinguistics. Psycholinguists also investigate how children acquire the complex grammar that underlies language use.
Language is a human system of communication that uses arbitrary signals, such as voice sounds, gestures, and/or written symbols. The study of language is called linguistics. Linguists (that is, specialists in the study of language) have defined language in many different ways. Here, chronologically arranged, are a few of those definitions. Language is a purely human and non-instinctive method of communicating ideas, emotions and desires by means of voluntarily produced symbols. (Edward Sapir, Language: An Introduction to the Study of Speech. Harcourt, Brace and Company, 1921)