| Representations of the magnitudes of fractions. | |
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MedLine Citation:
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PMID: 20873937 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We tested whether adults can use integrated, analog, magnitude representations to compare the values of fractions. The only previous study on this question concluded that even college students cannot form such representations and instead compare fraction magnitudes by representing numerators and denominators as separate whole numbers. However, atypical characteristics of the presented fractions might have provoked the use of atypical comparison strategies in that study. In our 3 experiments, university and community college students compared more balanced sets of single-digit and multi-digit fractions and consistently exhibited a logarithmic distance effect. Thus, adults used integrated, analog representations, akin to a mental number line, to compare fraction magnitudes. We interpret differences between the past and present findings in terms of different stimuli eliciting different solution strategies. |
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Authors:
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Michael Schneider; Robert S Siegler |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of experimental psychology. Human perception and performance Volume: 36 ISSN: 1939-1277 ISO Abbreviation: J Exp Psychol Hum Percept Perform Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-29 Completed Date: 2011-01-26 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7502589 Medline TA: J Exp Psychol Hum Percept Perform Country: United States |
Other Details:
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Languages: eng Pagination: 1227-38 Citation Subset: IM |
Copyright Information:
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(PsycINFO Database Record (c) 2010 APA, all rights reserved). |
Affiliation:
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Department of Psychology, Carnegie Mellon University. Schneider@ifv.gess.ethz.ch |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Concept Formation* Decision Making Female Humans Judgment Male Mathematics* Problem Solving* Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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