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| Research article summary (published 29 Apr 2002): |
Infants and toddlers discriminate amount: are they measuring?
Full Abstract
Four experiments that show an early ability to encode and retain information about extent are presented. We found that infants discriminate between the heights of dowels in a habituation task. We also found that toddlers discriminate between heights on a choice task in which a target dowel is presented and removed and they then choose between the target and a foil. Until 4 years of age, however, discrimination occurs only in the presence of a perceptually salient standard. Adults do not require a perceptually present standard; they can assess extent across temporal or spatial gaps by imposing a standard (measure). The present findings indicate that infants and toddlers do not possess an adult ability to establish extent, but that they do possess a skill that provides a start point for this important intellectual achievement.
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Author information
Author/s: Huttenlocher, Janellen (J); Duffy, Sean (S); Levine, Susan (S);
Affiliation: Department of Psychology, University of Chicago, IL 60637, USA. hutt(-atsign-)uchicago.edu
Journal and publication information
Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.
Journal: Psychological science : a journal of the American Psychological Society / APS (Psychol Sci), published in United States. (Language: eng)
Reference: 2002-May; vol 13 (issue 3) : pp 244-9
Dates: Created 2002/05/14; Completed 2002/10/10; Revised 2006/11/15;
PMID: 12009045, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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