... research was supported by the National Institute of Education under contract US-NIE-C- 400 - 76- 01 16 to the Center for the Study of Reading of the University of Illinois and Bolt, Beranek and ... an action is true can cause the hearer to believe the speaker wants that action to be performed. All utterances that communicate the speaker's desire that the hearer do some action are ... organize the experiment and transcript preparation. Than~s also go to Sharon Oviatt, Marilyn Adams, Chip Bruce, Andee Rubin, Pay Perrault, Candy Sidner, and Ed Smith for valuable discussions....