A Heart for Interaction: Shared Physiological Dynamics and Behavioral Coordination in a Collective, Creative Construction Task
Riccardo Fusaroli, Johanne S. Bj{\o}rndahl, Andreas Roepstorff and, Kristian Tyl\'en

TL;DR
This study investigates shared physiological heart rate dynamics during collaborative LEGO tasks, revealing their relation to behavioral coordination and social interaction, but not directly to rapport or group competence.
Contribution
The paper provides a comprehensive analysis of how shared heart rate dynamics relate to behavioral coordination and social interaction in collaborative tasks, highlighting their nuanced role.
Findings
Shared HR dynamics are influenced by task constraints and behavioral coordination.
Collective trials show more stable HR dynamics in online social interactions.
Behavioral coordination predicts rapport and group competence, unlike HR dynamics.
Abstract
Interpersonally shared physiological dynamics are increasingly argued to underlie rapport, empathy and even team performance. Inspired by the model of interpersonal synergy, we critically investigate the presence, temporal development, possible mechanisms and impact of shared interpersonal heart rate dynamics during individual and collective creative LEGO construction tasks. In Study 1 we show how shared HR dynamics are driven by a plurality of sources including task constraints and behavioral coordination. Generally, shared HR dynamics are more prevalent in individual trials (involving participants doing the same things) than in collective ones (involving participants taking turns and performing complementary actions). However, when contrasted against virtual pairs, collective trials display more stable shared HR dynamics suggesting that online social interaction plays an important…
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