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Force sharing and other collaborative strategies in a dyadic force perception task

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Title: Force sharing and other collaborative strategies in a dyadic force perception task
Authors: Tatti, F
Baud-Bovy, G
Item Type: Journal Article
Abstract: When several persons perform a physical task jointly, such as transporting an object together, the interaction force that each person experiences is the sum of the forces applied by all other persons on the same object. Therefore, there is a fundamental ambiguity about the origin of the force that each person experiences. This study investigated the ability of a dyad (two persons) to identify the direction of a small force produced by a haptic device and applied to a jointly held object. In this particular task, the dyad might split the force produced by the haptic device (the external force) in an infinite number of ways, depending on how the two partners interacted physically. A major objective of this study was to understand how the two partners coordinated their action to perceive the direction of the third force that was applied to the jointly held object. This study included a condition where each participant responded independently and another one where the two participants had to agree upon a single negotiated response. The results showed a broad range of behaviors. In general, the external force was not split in a way that would maximize the joint performance. In fact, the external force was often split very unequally, leaving one person without information about the external force. However, the performance was better than expected in this case, which led to the discovery of an unanticipated strategy whereby the person who took all the force transmitted this information to the partner by moving the jointly held object. When the dyad could negotiate the response, we found that the participant with less force information tended to switch his or her response more often.
Issue Date: 23-Feb-2018
Date of Acceptance: 30-Jan-2018
URI: http://hdl.handle.net/10044/1/57857
DOI: https://dx.doi.org/10.1371/journal.pone.0192754
ISSN: 1932-6203
Publisher: Public Library of Science (PLoS)
Journal / Book Title: PLoS ONE
Volume: 13
Issue: 2
Copyright Statement: © 2018 Tatti, Baud-Bovy. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited (https://creativecommons.org/licenses/by/4.0/)
Keywords: MD Multidisciplinary
General Science & Technology
Publication Status: Published
Conference Place: United States
Open Access location: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0192754
Article Number: e0192754
Appears in Collections:Mechanical Engineering