The discourse function of verbal aspect in Ecuadorian Siona

Abstract In addition to indicating whether or not events have come to an end at a reference time (temporal function), the opposition between imperfective aspect and perfective aspect in Ecuadorian Siona can also fulfil a discourse function. Imperfective forms of the verb caye ‘to say’ can signal that a speech act will be followed by a reaction or an addition, whereas perfective forms can signal that this is not the case. This discourse function is related to the temporal function through metaphor. This particular discourse function is an addition to the typology of non-temporal functions of verbal aspect.