We propose functions of Japanese Sentence Final Particles(JSFPs henceforth) YO, NE, NA, ZO and ZE that are based on a hierarchical memory model which consists of Long Term Memory, Episodic Memory and Discourse Memory. The proposed functions of JSFPs are basically monitoring functions of the mental processes being done in utterance. By this characterization of JSFPs, we account for the possible and impossible uses of conjoined JSFPs.
