Research on the social effectiveness of specific conversational behaviors is reviewed and a new study is presented. Eight versions of theWe would like to thank the following people who helped with the study: Marianne Morino, who helped write the scripts; Colleen Kelley and David KeUiher, who were the actors; Debbie Mahoe and Rebecca Gaslin, who were experimenters; and John Wright, who helped with the data reduction. We would also like to thank radio station KWAX for allowing us to use their facilities. A previous version of this paper was presented at the annual meeting of the Association for the Advancement of Behavior Therapy, San Francisco, December 1979. 1Department