Contends that simultaneous speech is not necessary for the recognition of "interruption" by interlocutors. A speaker's "completion right" is validated by how long s/he has been speaking, how often s/he has spoken, the number of "points" s/he has made, and the rights of some speakers to speak about some topics. (SED)

Presents a conceptual framework for analyzing and interpreting turn exchange and speaking turns from two perspectives: that of the surface forms of turn taking such as smooth and simultaneous exchanges and that of an empirical analysis of the formal or underlying structure of a turn-taking system. (SED)