Synchrony as a measure of conversation difficulty: Movement coherence increases with background noise level and complexity in dyads and triads.

When people interact, they fall into synchrony. This synchrony has been demonstrated in a range of contexts, from walking or playing music together to holding a conversation, and has been linked to prosocial outcomes such as development of rapport and efficiency of cooperation. While the basis of sy...

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Autores principales:	Lauren V Hadley, Jamie A Ward
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cc1cb1de830c49268c3036ed10419f2b
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spelling	oai:doaj.org-article:cc1cb1de830c49268c3036ed10419f2b2021-12-02T20:13:50ZSynchrony as a measure of conversation difficulty: Movement coherence increases with background noise level and complexity in dyads and triads.1932-620310.1371/journal.pone.0258247https://doaj.org/article/cc1cb1de830c49268c3036ed10419f2b2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0258247https://doaj.org/toc/1932-6203When people interact, they fall into synchrony. This synchrony has been demonstrated in a range of contexts, from walking or playing music together to holding a conversation, and has been linked to prosocial outcomes such as development of rapport and efficiency of cooperation. While the basis of synchrony remains unclear, several studies have found synchrony to increase when an interaction is made challenging, potentially providing a means of facilitating interaction. Here we focus on head movement during free conversation. As verbal information is obscured when conversing over background noise, we investigate whether synchrony is greater in high vs low levels of noise, as well as addressing the effect of background noise complexity. Participants held a series of conversations with unfamiliar interlocutors while seated in a lab, and the background noise level changed every 15-30s between 54, 60, 66, 72, and 78 dB. We report measures of head movement synchrony recorded via high-resolution motion tracking at the extreme noise levels (i.e., 54 vs 78 dB) in dyads (n = 15) and triads (n = 11). In both the dyads and the triads, we report increased movement coherence in high compared to low level speech-shaped noise. Furthermore, in triads we compare behaviour in speech-shaped noise vs multi-talker babble, and find greater movement coherence in the more complex babble condition. Key synchrony differences fall in the 0.2-0.5 Hz frequency bands, and are discussed in terms of their correspondence to talkers' average utterance durations. Additional synchrony differences occur at higher frequencies in the triads only (i.e., >5 Hz), which may relate to synchrony of backchannel cues (as multiple individuals were listening and responding to the same talker). Not only do these studies replicate prior work indicating interlocutors' increased reliance on behavioural synchrony as task difficulty increases, but they demonstrate these effects using multiple difficulty manipulations and across different sized interaction groups.Lauren V HadleyJamie A WardPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 10, p e0258247 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lauren V Hadley Jamie A Ward Synchrony as a measure of conversation difficulty: Movement coherence increases with background noise level and complexity in dyads and triads.
description	When people interact, they fall into synchrony. This synchrony has been demonstrated in a range of contexts, from walking or playing music together to holding a conversation, and has been linked to prosocial outcomes such as development of rapport and efficiency of cooperation. While the basis of synchrony remains unclear, several studies have found synchrony to increase when an interaction is made challenging, potentially providing a means of facilitating interaction. Here we focus on head movement during free conversation. As verbal information is obscured when conversing over background noise, we investigate whether synchrony is greater in high vs low levels of noise, as well as addressing the effect of background noise complexity. Participants held a series of conversations with unfamiliar interlocutors while seated in a lab, and the background noise level changed every 15-30s between 54, 60, 66, 72, and 78 dB. We report measures of head movement synchrony recorded via high-resolution motion tracking at the extreme noise levels (i.e., 54 vs 78 dB) in dyads (n = 15) and triads (n = 11). In both the dyads and the triads, we report increased movement coherence in high compared to low level speech-shaped noise. Furthermore, in triads we compare behaviour in speech-shaped noise vs multi-talker babble, and find greater movement coherence in the more complex babble condition. Key synchrony differences fall in the 0.2-0.5 Hz frequency bands, and are discussed in terms of their correspondence to talkers' average utterance durations. Additional synchrony differences occur at higher frequencies in the triads only (i.e., >5 Hz), which may relate to synchrony of backchannel cues (as multiple individuals were listening and responding to the same talker). Not only do these studies replicate prior work indicating interlocutors' increased reliance on behavioural synchrony as task difficulty increases, but they demonstrate these effects using multiple difficulty manipulations and across different sized interaction groups.
format	article
author	Lauren V Hadley Jamie A Ward
author_facet	Lauren V Hadley Jamie A Ward
author_sort	Lauren V Hadley
title	Synchrony as a measure of conversation difficulty: Movement coherence increases with background noise level and complexity in dyads and triads.
title_short	Synchrony as a measure of conversation difficulty: Movement coherence increases with background noise level and complexity in dyads and triads.
title_full	Synchrony as a measure of conversation difficulty: Movement coherence increases with background noise level and complexity in dyads and triads.
title_fullStr	Synchrony as a measure of conversation difficulty: Movement coherence increases with background noise level and complexity in dyads and triads.
title_full_unstemmed	Synchrony as a measure of conversation difficulty: Movement coherence increases with background noise level and complexity in dyads and triads.
title_sort	synchrony as a measure of conversation difficulty: movement coherence increases with background noise level and complexity in dyads and triads.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/cc1cb1de830c49268c3036ed10419f2b
work_keys_str_mv	AT laurenvhadley synchronyasameasureofconversationdifficultymovementcoherenceincreaseswithbackgroundnoiselevelandcomplexityindyadsandtriads AT jamieaward synchronyasameasureofconversationdifficultymovementcoherenceincreaseswithbackgroundnoiselevelandcomplexityindyadsandtriads
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Synchrony as a measure of conversation difficulty: Movement coherence increases with background noise level and complexity in dyads and triads.

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