Key points are not available for this paper at this time.
Editors Note: With this issue we inaugurate a new section of HCR devoted to summaries of research and theory in specialised areas within the field of human communication. Papers in this section will he designed to bring research and theory in a given area together so that both specialists and nonspecialists can determine the “state of the art” in that area up to the time the paper is published. Scholars who wish to prepare papers for this section are requested to contact the editor and make their interests known. Generally, papers for this section will be commissioned. However, unsolicited papers will be given full consideration.
James C. McCroskey (1977) studied this question.