This study investigated the distribution of Reactive Tokens in natural conversation by male and female speakers of Japanese. According to Clancy et al. a reactive token (RT) is "a short utterance produced by an interlocutor who is playing a listener"s role during the other interlocutor"s speakership" (1996, p. 355). Clancy et al. classify RTs into five types: backchannels, reactive expressions, collaborative finishes, repetitions, and resumptive openers. This study investigated the distribution of these five types of RTs. In particular, it studied their use in turn management and their distribution by gender. To identify the distribution of the five types of RTs more clearly, all five types of Reactive Tokens were divided into two levels: those that occurred at the boundary of a Pause-bounded Phrasal Unit (PPU) and those that occurred within a PPU. The participants in this study were 82 pairs of native speakers of Japanese: 82 female and 82 male native speakers of Japanese between 18...