A Time-Varying Measure of Dyadic Synchrony for Three-Dimensional Motion

Philip T. Reiss; Hila Z. Gvirts; Rotem Bennet; Alisa Kanterman; Nardine Fahoum; Simone G. Shamay-Tsoory

doi:10.1080/00273171.2018.1547874

A Time-Varying Measure of Dyadic Synchrony for Three-Dimensional Motion

Philip T. Reiss, Hila Z. Gvirts, Rotem Bennet, Alisa Kanterman, Nardine Fahoum, Simone G. Shamay-Tsoory

Department of Psychology

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We propose a novel approach to the analysis of synchronized three-dimensional motion in dyads. Motion recorded at high time resolution, as with a gaming device, is preprocessed in each of the three spatial dimensions by spline smoothing. Synchrony is then defined, at each time point, as the cosine between the two individuals’ estimated velocity vectors. The approach is extended to allow a time lag, allowing for the analysis of leader-follower dynamics. Mean square cosine over the time range is proposed as a scalar summary of dyadic synchrony, and this measure is found to be positively associated with cognitive empathy.

Original language	English
Pages (from-to)	530-541
Number of pages	12
Journal	Multivariate Behavioral Research
Volume	54
Issue number	4
DOIs	https://doi.org/10.1080/00273171.2018.1547874
State	Published - 4 Jul 2019

Keywords

Empathy
interpersonal synchrony
leader-follower dynamics
spline smoothing
three-dimensional motion
transcranial direct current stimulation

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10.1080/00273171.2018.1547874

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A Time-Varying Measure of Dyadic Synchrony for Three-Dimensional Motion

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