Document Detail

A longitudinal study of visual expectation and reaction time in the first year of life.
MedLine Citation:
PMID:  14717243     Owner:  NLM     Status:  MEDLINE    
Developmental change and stability of visual expectation and reaction times (RT) were examined at 5, 7, and 12 months in a longitudinal sample of term and preterm infants (birthweight <1,750 g). Using the traditional 200-ms cut-point to separate anticipatory from reactive saccades, RTs (and their standard deviations) declined markedly over age, whereas anticipations increased. Those infants who had faster RTs were more likely to anticipate upcoming events and were more attentive (fewer trials off-task and less response variability). Crossage stability was modest for most measures from 5 to 7 and 7 to 12 months, but rarely significant from 5 to 12 months. When the cut-point was lowered to 150 ms (to accommodate recent concerns that the higher cut-point may misclassify some true RTs as anticipations), the age-related increase in anticipations disappeared. Thus, although the results indicate marked increases in processing speed with age, evidence for increasing anticipations is equivocal. Findings were similar for preterm and term infants.
Susan A Rose; Judith F Feldman; Jeffery J Jankowski; Donna M Caro
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Child development     Volume:  73     ISSN:  0009-3920     ISO Abbreviation:  Child Dev     Publication Date:    2002 Jan-Feb
Date Detail:
Created Date:  2004-01-13     Completed Date:  2004-02-03     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0372725     Medline TA:  Child Dev     Country:  United States    
Other Details:
Languages:  eng     Pagination:  47-61     Citation Subset:  IM    
Department of Pediatrics, Albert Einstein College of Medicine, Children's Hospital at Montefiore, Kennedy Center, Bronx, NY 10461, USA.
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MeSH Terms
Child Development
Child Psychology*
Child, Preschool
Discrimination Learning
Infant, Newborn
Infant, Premature / psychology*
Longitudinal Studies
Pattern Recognition, Visual*
Prospective Studies
Reaction Time*
Serial Learning
Set (Psychology)*
Grant Support

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