The research reported in this chapter is intended as a contribution to an understanding of the basic linguistic units used by speakers in spontaneous communication. Our interest is in the linguistic factors associated with the split-second timing of next turn onset that has been documented in conversation analytic literature (Sacks, Schegloff, and Jefferson, 1974; Jefferson, 1973; Wilson and Zimmerman, 1986).
In the past two decades, conversation analysts have uncovered patterns and principles of interaction, particularly in the areas of turn-taking and the sequential organization of talk. The picture of spontaneous interaction that emerges very clearly from this research depicts a complex and intricately monitored human practice that is maximally sensitive to moment-by-moment input by all parties to a conversation, and is, therefore, characterized by an organization that is locally managed. Turns at talk vary widely in length, and their length is not unilaterally controlled. The extension of a turn at talk has everything to do with the manner in which that turn is being responded to by the other participant(s) in the conversation (e.g., Atkinson and Heritage, 1984; Davidson, 1984; C. Goodwin, 1979, 1981, 1986a, 1986b, 1987; M. Goodwin, 1980; Goodwin and Goodwin, 1986, 1987, forthcoming; Heritage, 1984, 1989; Jefferson, 1973, 1987, 1989; Lerner, 1987, 1989, 1991, in progress; Sacks, et al. 1974; Schegloff, 1979, 1980, 1982, 1986, 1987, 1988, 1989, 1990, 1992; Schegloff and Sacks, 1973; Wilson and Zimmerman, 1986; and Wilson et al. 1984). To understand the syntax and rhetoric of conversational language use, linguists need to take very seriously the situated practices of conversationalists as revealed in the careful work of conversation analysts.