The project was concerned with the question how presuppositional information is processed during the online construction of a sentence’s meaning. Building on earlier results, we proposed a model of pragmatic presupposition processing in which listeners expect speakers to make pragmatically felicitous utterances and use these expectations to incrementally and predictively process incoming material. We proposed to link violations of such expectations to empirical data from mouse-tracking experiments among others. Mouse tracking is an established tool in cognitive psychology that delivers fine-grained data about the temporal unfolding of a decision process.