Demonstrative this/that and gestures: Do they function the same way?

This paper addresses the unresolved question of whether demonstrative this/that and their accompanying gestures serve the same function. By utilizing Langacker's notion of Current Discourse Space (CDS) and integrating gesture studies and frame semantics, this research models the entire process of demonstrative use and points to the distinct roles that demonstratives and gestures play in each usage event. The findings reveal that their functions are indeed different: the gesture (gazing) initially singles out an entity as a target, followed by the demonstratives encoding it phonetically. Subsequently, the demonstratives evoke the initiation of a targeting act by the hearer, and the gesture (pointing) specifically identifies the entity during the decoding process. Based on the notion of distinguishing role and value, this study proposes that the semantic content ('target') encoded by demonstratives is the role ('element') within the viewing (attention)-target event frame, rather than its value ('entity'). This principle applies to both exophoric and anaphoric contexts, providing a unified conceptual foundation for the function of demonstratives. In the light of these findings, the article also offers novel perspectives on the function of demonstratives as grounding elements, contributing to a deeper understanding of their role in communication. [ABSTRACT FROM AUTHOR]