Asymmetry in Facial Expressions as a Function of Social Skills

Masashi KOMORI; Hiroko KAMIDE; Satoru KAWAMURA; Chika NAGAOKA

doi:10.1587/transinf.E96.D.507

Asymmetry in Facial Expressions as a Function of Social Skills

Masashi KOMORI, Hiroko KAMIDE, Satoru KAWAMURA, Chika NAGAOKA

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This study investigated the relationship between social skills and facial asymmetry in facial expressions. Three-dimensional facial landmark data of facial expressions (neutral, happy, and angry) were obtained from Japanese participants (n = 62). Following a facial expression task, each participant completed KiSS-18 (Kikuchi's Scale of Social Skills; Kikuchi, 2007). Using a generalized Procrustes analysis, faces and their mirror-reversed versions were represented as points on a hyperplane. The asymmetry of each individual face was defined as Euclidian distance between the face and its mirror reversed face on this plane. Subtraction of the asymmetry level of a neutral face of each individual from the asymmetry level of a target emotion face was defined as the index of “expression asymmetry” given by a particular emotion. Correlation coefficients of KiSS-18 scores and expression asymmetry scores were computed for both happy and angry expressions. Significant negative correlations between KiSS-18 scores and expression asymmetries were found for both expressions. Results indicate that the symmetry in facial expressions increases with higher level of social skills.

Publication: IEICE TRANSACTIONS on Information Vol.E96-D No.3 pp.507-513

Publication Date: 2013/03/01

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Online ISSN: 1745-1361

DOI: 10.1587/transinf.E96.D.507

Type of Manuscript: Special Section PAPER (Special Section on Face Perception and Recognition)

Category: Face Perception and Recognition

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Masashi KOMORI, Hiroko KAMIDE, Satoru KAWAMURA, Chika NAGAOKA, "Asymmetry in Facial Expressions as a Function of Social Skills" in IEICE TRANSACTIONS on Information, vol. E96-D, no. 3, pp. 507-513, March 2013, doi: 10.1587/transinf.E96.D.507.
Abstract: This study investigated the relationship between social skills and facial asymmetry in facial expressions. Three-dimensional facial landmark data of facial expressions (neutral, happy, and angry) were obtained from Japanese participants (n = 62). Following a facial expression task, each participant completed KiSS-18 (Kikuchi's Scale of Social Skills; Kikuchi, 2007). Using a generalized Procrustes analysis, faces and their mirror-reversed versions were represented as points on a hyperplane. The asymmetry of each individual face was defined as Euclidian distance between the face and its mirror reversed face on this plane. Subtraction of the asymmetry level of a neutral face of each individual from the asymmetry level of a target emotion face was defined as the index of “expression asymmetry” given by a particular emotion. Correlation coefficients of KiSS-18 scores and expression asymmetry scores were computed for both happy and angry expressions. Significant negative correlations between KiSS-18 scores and expression asymmetries were found for both expressions. Results indicate that the symmetry in facial expressions increases with higher level of social skills.
URL: https://globals.ieice.org/en_transactions/information/10.1587/transinf.E96.D.507/_p

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@ARTICLE{e96-d_3_507,
author={Masashi KOMORI, Hiroko KAMIDE, Satoru KAWAMURA, Chika NAGAOKA, },
journal={IEICE TRANSACTIONS on Information},
title={Asymmetry in Facial Expressions as a Function of Social Skills},
year={2013},
volume={E96-D},
number={3},
pages={507-513},
abstract={This study investigated the relationship between social skills and facial asymmetry in facial expressions. Three-dimensional facial landmark data of facial expressions (neutral, happy, and angry) were obtained from Japanese participants (n = 62). Following a facial expression task, each participant completed KiSS-18 (Kikuchi's Scale of Social Skills; Kikuchi, 2007). Using a generalized Procrustes analysis, faces and their mirror-reversed versions were represented as points on a hyperplane. The asymmetry of each individual face was defined as Euclidian distance between the face and its mirror reversed face on this plane. Subtraction of the asymmetry level of a neutral face of each individual from the asymmetry level of a target emotion face was defined as the index of “expression asymmetry” given by a particular emotion. Correlation coefficients of KiSS-18 scores and expression asymmetry scores were computed for both happy and angry expressions. Significant negative correlations between KiSS-18 scores and expression asymmetries were found for both expressions. Results indicate that the symmetry in facial expressions increases with higher level of social skills.},
keywords={},
doi={10.1587/transinf.E96.D.507},
ISSN={1745-1361},
month={March},}

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TY - JOUR
TI - Asymmetry in Facial Expressions as a Function of Social Skills
T2 - IEICE TRANSACTIONS on Information
SP - 507
EP - 513
AU - Masashi KOMORI
AU - Hiroko KAMIDE
AU - Satoru KAWAMURA
AU - Chika NAGAOKA
PY - 2013
DO - 10.1587/transinf.E96.D.507
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E96-D
IS - 3
JA - IEICE TRANSACTIONS on Information
Y1 - March 2013
AB - This study investigated the relationship between social skills and facial asymmetry in facial expressions. Three-dimensional facial landmark data of facial expressions (neutral, happy, and angry) were obtained from Japanese participants (n = 62). Following a facial expression task, each participant completed KiSS-18 (Kikuchi's Scale of Social Skills; Kikuchi, 2007). Using a generalized Procrustes analysis, faces and their mirror-reversed versions were represented as points on a hyperplane. The asymmetry of each individual face was defined as Euclidian distance between the face and its mirror reversed face on this plane. Subtraction of the asymmetry level of a neutral face of each individual from the asymmetry level of a target emotion face was defined as the index of “expression asymmetry” given by a particular emotion. Correlation coefficients of KiSS-18 scores and expression asymmetry scores were computed for both happy and angry expressions. Significant negative correlations between KiSS-18 scores and expression asymmetries were found for both expressions. Results indicate that the symmetry in facial expressions increases with higher level of social skills.
ER -