define media richness
Media richness theory. Media richness theory, sometimes referred to as information richness theory or MRT, is a framework used to describe a communication medium's ability to reproduce the information sent over it. It was introduced by Richard L. Daft and Robert H. Lengel in 1986 as an extension of social information processing theory. MRT is used to rank and evaluate the richness of certain communication media, such as phone calls, video conferencing, and email.