Aspects of gestural alignment in task-oriented dialogues

Abstract

Interlocutors in a conversation influence each other in a number of dimensions. This process may lead to observable changes in their communicative behaviour. The directions and profiles of these changes are often correlated with the quality of interaction and may predict its success. In the present study, the gestural component of communication is scrutinised for changes that may reflect the process of alignment. Two types of task-oriented dialogues between teenagers are recorded and annotated for gestures and their features. We hypothesize that the dialogue task type (collaborative vs. competitive), as well as certain culture-specific properties of alignment that differ between German and Polish pairs, may significantly influence the process of communication. In order to explore the data and detect tendencies in gestural behaviour, automatised annotation mining and statistical exploration have been used, including a moving frame approach aimed at the investigation of co-occurring strokes as well as re-occurring strokes and their features. Significant differences between German and Polish speakers, as well as between the two dialogue types, have been found in the number of gestures, stroke duration and amplitude.