Experiments in Linguistic Meaning

We report results of experiments on pronoun and presupposition binding across modalities. We show that ordinary pronouns (in the spoken/written domain) can be dynamically bound to gesturally introduced discourse referents and that presuppositions induced by spoken/written triggers (via e.g. 'again' or 'too') can be bound likewise. These experiments support research that has proposed the existence of cross-modal binding to motivate a formal framework that can account for interaction of various input of linguistic content from different dimensions and modalities.