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The co-authors on this study are Dawn K. Melzer, an assistant professor of psychology at Sacred Heart University; Joong Hyun Ryu, Purdue graduate student in the Department of Health and Kinesiology; and Jeffrey M. Haddad, Purdue associate professor of health and kinesiology. Claxton's work is supported by Purdue's Department of Health and Kinesiology.
ABSTRACT: The control of posture in newly standing infants is task dependent
Laura J. Claxton, Dawn K. Melzer, Joong Hyun Ryu, Jeffrey M. Haddad
The postural sway patterns of newly standing infants was compared under two conditions: standing while holding a toy and standing while not holding a toy. Infants exhibited a lower magnitude of postural sway and more complex sway patterns when holding the toy. These changes suggest that infants adapt postural sway in a manner that facilitates visually fixating on and stabilizing the toy in their hand. When simply standing, infants exhibited postural sway patterns that appeared to be more exploratory in nature. Exploratory sway patterns may allow infants to learn the affordances of their new standing posture. These results demonstrate that newly standing infants are capable of task-dependent postural control.
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