2004 年 18 巻 2 号 p. 123-132
Interjection and silence have long been investigated in phonetics or from the viewpoint of semantics viewpoint. But the purpose of this study is to investigate interjection and silence from systems theory and a pragmatical viewpoint. Systems theory considers human interaction as system. There are two levels of systems: the interpersonal system and the conversational system. The interpersonal system is defined by relationships among persons. The conversational system is defined by verbal or/and nonverbal communication in conversation. The purpose of this study is to investigate the association between the interpersonal system and the conversational system, and to investigate self-regulatory function in problem-talked situations. Subjects were ten couples who were in their twenties. They were asked to chat (controlled condition) and to talk through a problem that had not been resolved (problem condition) with their partners. The results were as follows: in the problem condition, they used interjection and silence more than in the controlled condition. These results confirmed that interjection and silence worked toward continuing the conversational system passively, there by maintaining the interpersonal system, and that this phenomenon has a self-regulatory function.