Document Detail


Stable individual differences in number discrimination in infancy.
MedLine Citation:
PMID:  20977560     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Previous studies have shown that as a group 6-month-old infants successfully discriminate numerical changes when the values differ by at least a 1:2 ratio but fail at a 2:3 ratio (e.g. 8 vs. 16 but not 8 vs. 12). However, no studies have yet examined individual differences in number discrimination in infancy. Using a novel numerical change detection paradigm, we present more direct evidence that infants' numerical perception is ratio-dependent even within the range of discriminable ratios and thus adheres to Weber's Law. Furthermore, we show that infants' numerical discrimination at 6 months reliably predicts their numerical discrimination abilities but not visual short-term memory at 9 months. Thus, individual differences in numerical discrimination acuity may be stable within the first year of life and provide important avenues for future longitudinal research exploring the relationship between infant numerical discrimination and later developing math achievement.
Authors:
Melissa E Libertus; Elizabeth M Brannon
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Developmental science     Volume:  13     ISSN:  1467-7687     ISO Abbreviation:  Dev Sci     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-27     Completed Date:  2011-02-18     Revised Date:  2013-07-03    
Medline Journal Info:
Nlm Unique ID:  9814574     Medline TA:  Dev Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  900-6     Citation Subset:  IM    
Copyright Information:
© 2010 Blackwell Publishing Ltd.
Affiliation:
Center for Cognitive Neuroscience, Duke University, Durham, NC 27708, USA. melissa.libertus@duke.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Child Development / physiology*
Discrimination (Psychology) / physiology*
Female
Humans
Individuality*
Infant
Male
Mathematics*
Photic Stimulation
Psychological Tests
Grant Support
ID/Acronym/Agency:
R01 HD059108/HD/NICHD NIH HHS; R01 MH066154/MH/NIMH NIH HHS; R01 MH066154/MH/NIMH NIH HHS
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Neurodevelopmental changes in the circuits underlying empathy and sympathy from childhood to adultho...
Next Document:  Seventeen-month-olds appeal to false beliefs to interpret others' referential communication.