Perception of point-light walker produced by eight lights attached to the back of the walker

Authors
Citation
S. Sumi, Perception of point-light walker produced by eight lights attached to the back of the walker, SW J PSYCH, 59(2), 2000, pp. 126-132
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Psycology
Journal title
SWISS JOURNAL OF PSYCHOLOGY
ISSN journal
1421-0185 → ACNP
Volume
59
Issue
2
Year of publication
2000
Pages
126 - 132
Database
ISI
SICI code
1421-0185(200006)59:2<126:POPWPB>2.0.ZU;2-F
Abstract
Small lights were attached to the backs of walkers at eight main points of their bodies, i.e., the shoulders. hips, knees and heels. The walkers. four men and four women aged 18 to 62, walked on a moving belt at a speed of 1. 0 to 3.0 km/h. Their gaits, outlined by point-lights, were videotaped and p rojected on a screen. A total of 420 participants, 212 female and 208 male, were asked to judge the gender and age of the point-light walkers (PLWs). Our findings were that (1), there were 72% correct gender-identifications w ith the figure bring 85% or more for older walkers; (2), the gaits of two y oung PLWs were perceived as those of old persons. The reason for this appea red to be correlative changes between the movements of the individual ports of the body, especially of shoulders and heels: (3), signal detectability (d') for gender seemed to be a useful measure of gender-identification. The above findings suggest that both back-view and side-view observations of t he PLWs provide valuable information for gait perception.