Communication studies is often considered a part of the social sciences or the humanities, but sometimes draws on other disciplines as well, including engineering, architecture, mathematics, sociology, psychology, computer science, gender and sexuality and economics.

Communication studies can deal with, for instance, the transmission of messages from one point to another through some medium of dissemination, such as face-to-face or television, but also with how institutions like libraries maintain information over time.

For your interest, I thought this article was quite a good basic guide to effective one-on-one communication.