| Stable individual differences in number discrimination in infancy. | |
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MedLine Citation:
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PMID: 20977560 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Melissa E Libertus; Elizabeth M Brannon |
Publication Detail:
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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:
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Title: Developmental science Volume: 13 ISSN: 1467-7687 ISO Abbreviation: Dev Sci Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-10-27 Completed Date: 2011-02-18 Revised Date: 2013-02-26 |
Medline Journal Info:
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Nlm Unique ID: 9814574 Medline TA: Dev Sci Country: England |
Other Details:
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Languages: eng Pagination: 900-6 Citation Subset: IM |
Copyright Information:
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© 2010 Blackwell Publishing Ltd. |
Affiliation:
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Center for Cognitive Neuroscience, Duke University, Durham, NC 27708, USA. melissa.libertus@duke.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Child Development
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physiology* Discrimination (Psychology) / physiology* Female Humans Individuality* Infant Male Mathematics* Photic Stimulation Psychological Tests |
| Grant Support | |
ID/Acronym/Agency:
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R01 HD059108/HD/NICHD NIH HHS; R01 MH066154/MH/NIMH NIH HHS; R01 MH066154/MH/NIMH NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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