Backgrounding and accommodation of presuppositions: an experimental approach

Recent research on presupposition has aimed to use techniques of experimental semantics and pragmatics to cast light on the processes that underlie projection and information packaging. Relatively little attention has so far been paid to the relation between the diversity of presuppositions with respect to information packaging and their projection behaviour. In this paper, we argue that information backgrounding and projection can be seen as closely related phenomena, and we present an experimental study investigating the behaviour of a variety of presupposition triggers. We interpret the results as evidence for the psychological reality of at least one of the theoretical distinctions between presupposition types posited in the literature (lexical versus resolution presuppositions), and consider their implications for the competing accounts of presupposition projection.