Japanese Journal of Qualitative Psychology
Online ISSN : 2435-7065
Standing up with Support in Infancy in the Context of Ecological Geometry
Postural Control and Perception of Surface Layout
Hiroe Yamazaki
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2011 Volume 10 Issue 1 Pages 7-24

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Abstract

The purpose of this study was to examine the postural control involved in standing up with support in the context of an environmental structure. The occasions on which an infant 8-11 months of age stood with support were observed at his home. The routes followed by his four limbs were analyzed separately in terms of perceived surface layout and divided into three phases: the first contact with the vertical layout, the trajectory of standing up, and the subsequent trajectory. The results showed that the infant detected several kinds of vertically organized surface layouts and discriminated accordingly for each postural change. The data suggested that detection of vertical surface layouts and their related edges contributed both mechanically and visually to the emergence of standing up with support.

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© 2011 Japanese Association of Qualitative Psychology
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