Detection and application of influence rankings in small group meetings
Proceedings of the 8th international conference on Multimodal interfaces
Distinguishing Causal Interactions in Neural Populations
Neural Computation
Using audio and video features to classify the most dominant person in a group meeting
Proceedings of the 15th international conference on Multimedia
Investigating automatic dominance estimation in groups from visual attention and speaking activity
ICMI '08 Proceedings of the 10th international conference on Multimodal interfaces
Meeting mediator: enhancing group collaborationusing sociometric feedback
Proceedings of the 2008 ACM conference on Computer supported cooperative work
Modeling dominance in group conversations using nonverbal activity cues
IEEE Transactions on Audio, Speech, and Language Processing - Special issue on multimodal processing in speech-based interactions
Human behavior understanding for inducing behavioral change: application perspectives
HBU'11 Proceedings of the Second international conference on Human Behavior Unterstanding
Modeling dominance effects on nonverbal behaviors using granger causality
Proceedings of the 14th ACM international conference on Multimodal interaction
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We propose the use of Granger Causality to model the effects that dominant people induce on the other participants' behavioral patterns during small group interactions. We test the proposed approach on a dataset of brainstorming and problem solving tasks collected using the sociometric badges' accelerometers. The expectation that more dominant people have generalized higher influence is not borne out; however some more nuanced patterns emerge. In the first place, more dominant people tend to behave differently according to the nature of the task: during brainstorming they engage in complex relations where they simultaneously play the role of influencer and of influencee, whereas during problem solving they tend to be influenced by less dominant people. Moreover, dominant people adopt a complementarity stance, increasing or decreasing their body activity in an opposite manner to their influencers. On the other hand, less dominant people react (almost) as frequently with mimicry as with complementary. Finally, we can also see that the overall level of influence in a group can be associated with the group's performance, in particular for problem solving task.