Document Detail


Motor origins of tool use.
MedLine Citation:
PMID:  23106197     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The current study examines the developmental trajectory of banging movements and its implications for tool use development. Twenty (6- to 15-month-old) infants wore reflective markers while banging a handled cube; movements were recorded at 240 Hz. Results indicated that through the second half-year, banging movements undergo developmental changes making them ideally suited for instrumental hammering and pounding. Younger infants were inefficient and variable when banging the object: Their hands followed circuitous paths of great lengths at high velocities. By 1 year, infants showed consistent and efficient straight up-down hand trajectories of smaller magnitude and velocity, allowing for precise aiming and delivering dependable levels of force. The findings suggest that tool use develops gradually from infants' existing manual behaviors.
Authors:
Björn A Kahrs; Wendy P Jung; Jeffrey J Lockman
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2012-10-25
Journal Detail:
Title:  Child development     Volume:  84     ISSN:  1467-8624     ISO Abbreviation:  Child Dev     Publication Date:    2013 May-Jun
Date Detail:
Created Date:  2013-05-09     Completed Date:  2014-02-05     Revised Date:  2014-05-08    
Medline Journal Info:
Nlm Unique ID:  0372725     Medline TA:  Child Dev     Country:  United States    
Other Details:
Languages:  eng     Pagination:  810-6     Citation Subset:  IM    
Copyright Information:
© 2012 The Authors. Child Development © 2012 Society for Research in Child Development, Inc.
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MeSH Terms
Descriptor/Qualifier:
Age Factors
Female
Humans
Infant
Male
Movement / physiology*
Psychomotor Performance / physiology*
Grant Support
ID/Acronym/Agency:
5R01HD043842/HD/NICHD NIH HHS; 5R01HD067581/HD/NICHD NIH HHS; R01 HD043842/HD/NICHD NIH HHS; R01 HD067581/HD/NICHD NIH HHS
Comments/Corrections

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