Many researchers, working within the relevant concerns of their disciplines, have also sought possible theories or laws of cause and effect to explain the ways in which human dispositions are affected by certain kinds of communication under certain circumstances, and the reasons for the change.
In the 1960s a Canadian educator, Marshall Mc Luhan, drew the threads of interest in the field of communication into a view that associated many contemporary psychological and sociological phenomena with the media employed in modern culture.
In 1928 the English literary critic and author Communication takes place when one mind so acts upon its environment that another mind is influenced, and in that other mind an experience occurs which is like the experience in the first mind, and is caused in part by that experience.
Richards’s definition is both general and rough, but its application to nearly all kinds of communication—including those between humans and animals (but excluding machines)—separated the contents of messages from the processes in human affairs by which these messages are transmitted.
Under the impetus of new technology—particularly high-speed computers—mathematicians and engineers have tried to quantify and measure components of communicated information and to develop methods for translating various types of messages into quantities or amounts amenable to both their procedures and instruments.
Numerous and differently phrased questions have been posed by artists, architects, artisans, writers, and others concerning the overall influences of various types of communication.
More recently, questions have been raised concerning the adequacy of any single definition of the term Jurgen Ruesch identified 40 varieties of disciplinary approaches to the subject, including architectural, anthropological, psychological, political, and many other interpretations of the apparently simple interaction described by Richards.