Document Detail

Some developmental aspects of infants cry.
MedLine Citation:
PMID:  670953     Owner:  NLM     Status:  MEDLINE    
Respiratory activity during crying was measured in a semilongitudianl study of 10 normal infants aged two days to eight months. Temporal aspects of respiration during crying showed marked change with age: athe duration of the expiratory phase steadily increased, while the duration of the inspiratory phase remained remarkable constant, producing an ever-lower I-fraction. A previous study reported no developmental changes in the temporal aspects of the acoustic cry signal from one to seven months of age. Reasons for the divergent findings of the present study arepresented, and it is suggested that respiratory behavior may be a better indicator of developmental changes in the crying act thanthe acoustic signal.
C N Wilder; R J Baken
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of genetic psychology     Volume:  132     ISSN:  0022-1325     ISO Abbreviation:  J Genet Psychol     Publication Date:  1978 Jun 
Date Detail:
Created Date:  1978-09-30     Completed Date:  1978-09-30     Revised Date:  2007-03-30    
Medline Journal Info:
Nlm Unique ID:  2985112R     Medline TA:  J Genet Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  225-30     Citation Subset:  IM    
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MeSH Terms
Child Development*
Infant, Newborn

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