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Interpersonal in the communication process is denned as reliance upon the communication of another person in order to achieve a desired but uncertain objective in a risky situation. A theory of the dimensions of interpersonal in communication is presented. Experimental studies of ethos and factor-analytic studies of source credibility support the hypothesis that interpersonal is based upon a listener's perceptions of a speaker's expertness, reliability, intentions, activeness, personal attractiveness, and the majority opinion of the listener's associates. The word trust has been prominent in our vocabulary for years; however, the concept is somewhat similar to Mark Twain's notion of the weather: Everybody knows about trust, but few people have studied it. The term is used to indicate one's attitude toward such things as paper money, dogs, line fences, and women.
Kim Giffin (Sun,) studied this question.