TY - JOUR
T1 - Transition From Crawling to Walking Changes Gaze Communication Space in Everyday Infant-Parent Interaction
AU - Yamamoto, Hiroki
AU - Sato, Atsushi
AU - Itakura, Shoji
N1 - Publisher Copyright:
© Copyright © 2020 Yamamoto, Sato and Itakura.
PY - 2020/1/24
Y1 - 2020/1/24
N2 - Acquisition of walking changes not only infants' locomotion itself but also infants' exploratory behavior and social interaction, such as gaze communication. To understand the ecological context in which gaze communication occurs and how it changes with walking development from the point of view of the spatial arrangement of infants, parents, and objects, we analyzed longitudinal data of daily eye contact scenes recorded from head-mounted eye trackers worn by parents as infants grew from 10 to 15.5 months, focusing on infant-parent distance and the number of objects between the dyad. A Bayesian state-space model revealed that the interpersonal distance at which infants initiated eye contact with their parents increased with the time ratio of walking to crawling. This result could not be explained by the developmental change in the amount of time that the infants were far from the parents, which is not limited to the gaze communication context. Moreover, the interpersonal distance at which the parents initiated eye contact with the infants did not increase with the time ratio of walking to crawling. The number of objects on the floor between infants and parents at the time of eye contact increased with interpersonal distance. Taken together, these results indicate that the transition from crawling to walking changes the ecological context in which infants initiate gaze communication to a visual environment characterized by a larger interpersonal distance and, therefore, more objects cluttered between the dyad. The present study has wider implications for the developmental change of shared attention in conjunction with walking development.
AB - Acquisition of walking changes not only infants' locomotion itself but also infants' exploratory behavior and social interaction, such as gaze communication. To understand the ecological context in which gaze communication occurs and how it changes with walking development from the point of view of the spatial arrangement of infants, parents, and objects, we analyzed longitudinal data of daily eye contact scenes recorded from head-mounted eye trackers worn by parents as infants grew from 10 to 15.5 months, focusing on infant-parent distance and the number of objects between the dyad. A Bayesian state-space model revealed that the interpersonal distance at which infants initiated eye contact with their parents increased with the time ratio of walking to crawling. This result could not be explained by the developmental change in the amount of time that the infants were far from the parents, which is not limited to the gaze communication context. Moreover, the interpersonal distance at which the parents initiated eye contact with the infants did not increase with the time ratio of walking to crawling. The number of objects on the floor between infants and parents at the time of eye contact increased with interpersonal distance. Taken together, these results indicate that the transition from crawling to walking changes the ecological context in which infants initiate gaze communication to a visual environment characterized by a larger interpersonal distance and, therefore, more objects cluttered between the dyad. The present study has wider implications for the developmental change of shared attention in conjunction with walking development.
KW - crawling
KW - eye contact
KW - head-mounted eye tracking
KW - interpersonal distance
KW - second-person perspective
KW - social interaction
KW - walking
UR - http://www.scopus.com/inward/record.url?scp=85079160241&partnerID=8YFLogxK
U2 - 10.3389/fpsyg.2019.02987
DO - 10.3389/fpsyg.2019.02987
M3 - 学術論文
C2 - 32116864
AN - SCOPUS:85079160241
SN - 1664-1078
VL - 10
JO - Frontiers in Psychology
JF - Frontiers in Psychology
M1 - 2987
ER -