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.
Linguistics is a field of study focusing on the structure of language. Completely captivating and impossibly satisfying. A 2 year old child learns on average 9 new concepts a day. Somehow the brains of toddlers can intuit multiple abstract concepts over the course of a day.