The representations underlying infants' choice of more: object files versus analog magnitudes.

Full Abstract

A new choice task was used to explore infants' spontaneous representations of more and less. Ten- and 12-month-old infants saw crackers placed sequentially into two containers, then were allowed to crawl and obtain the crackers from the container they chose. Infants chose the larger quantity with comparisons of 1 versus 2 and 2 versus 3, but failed with comparisons of 3 versus 4, 2 versus 4, and 3 versus 6. Success with visible arrays ruled out a motivational explanation for failure in the occluded 3-versus-6 condition. Control tasks ruled out the possibility that presentation duration guided choice, and showed that presentation complexity was not responsible for the failure with larger numbers. When crackers were different sizes, total surface area or volume determined choice. The infants 'pattern of success and failure supports the hypothesis that they relied on object-file representations, comparing mental models via total volume or surface area rather than via one-to-one correspondence between objectfiles.

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Author information

Author/s: Feigenson, Lisa (L); Carey, Susan (S); Hauser, Marc (M);

Affiliation: New York University, USA. feigens@wjh.harvard.edu

Grants: HD-38338-01 (Agency:United States NICHD)

Journal and publication information

Publication Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.

Journal: Psychological science : a journal of the American Psychological Society / APS (Psychol Sci), published in United States. (Language: eng)

Reference: 2002-Mar; vol 13 (issue 2) : pp 150-6

Dates: Created 2002/04/05; Completed 2002/10/29; Revised 2007/11/14;

PMID: 11933999, 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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