Changes in Verbal and Nonverbal Conversational Behavior in Long-Term Interaction

摘要

We present an empirical investigation of conversational behavior in dyadic interaction spanning multiple conversations, in the context of a developing interpersonal relationship between a health counselor and her clients. Using a longitudinal video corpus of behavior change counseling conversations, we show systematic changes in verbal and nonverbal behavior during greetings (within the first minute of conversations). Both the number of prior conversations and self-reported assessments of the strength of the interpersonal relationship are predictive of changes in verbal and nonverbal behavior. We present a model and implementation of nonverbal behavior generation for conversational agents that incorporates these findings, and discuss how the results can be applied to multimodal recognition of conversational behavior over time.