Using the axis of elongation to align shapes: Developmental changes between 18 and 24 months
Identifieur interne : 000837 ( Pmc/Checkpoint ); précédent : 000836; suivant : 000838Using the axis of elongation to align shapes: Developmental changes between 18 and 24 months
Auteurs : Linda B. Smith ; Sandra Street ; Susan S. Jones ; Karin H. JamesSource :
- Journal of experimental child psychology [ 0022-0965 ] ; 2014.
Abstract
An object’s axis of elongation serves as an important frame of reference for forming 3-dimensional representations of object shape. By several recent accounts, the formation of these representations is also related to experiences of acting on objects. Four experiments examined 18- to 24-month-old (
Url:
DOI: 10.1016/j.jecp.2014.01.009
PubMed: 24650776
PubMed Central: 4030647
Affiliations:
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<author><name sortKey="Smith, Linda B" sort="Smith, Linda B" uniqKey="Smith L" first="Linda B." last="Smith">Linda B. Smith</name>
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<author><name sortKey="Street, Sandra" sort="Street, Sandra" uniqKey="Street S" first="Sandra" last="Street">Sandra Street</name>
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<author><name sortKey="Jones, Susan S" sort="Jones, Susan S" uniqKey="Jones S" first="Susan S." last="Jones">Susan S. Jones</name>
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<author><name sortKey="James, Karin H" sort="James, Karin H" uniqKey="James K" first="Karin H." last="James">Karin H. James</name>
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<author><name sortKey="Jones, Susan S" sort="Jones, Susan S" uniqKey="Jones S" first="Susan S." last="Jones">Susan S. Jones</name>
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<author><name sortKey="James, Karin H" sort="James, Karin H" uniqKey="James K" first="Karin H." last="James">Karin H. James</name>
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<series><title level="j">Journal of experimental child psychology</title>
<idno type="ISSN">0022-0965</idno>
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<front><div type="abstract" xml:lang="en"><p id="P1">An object’s axis of elongation serves as an important frame of reference for forming 3-dimensional representations of object shape. By several recent accounts, the formation of these representations is also related to experiences of acting on objects. Four experiments examined 18- to 24-month-old (<italic>N</italic>
= 103) infants’ sensitivity to the elongated axis in action tasks that required extracting, comparing and physically rotating an object so that its major axis was aligned with that of a visual standard. In Experiments 1 and 2, the older infants precisely rotated both simple and complexly shaped 3-dimensional objects in insertion tasks in which the visual standard was the rectangular contour defining the opening in a box. The younger infants performed poorly. Experiments 3 and 4 provide evidence on emerging abilities in extracting and using the most extended axis as a frame of reference for shape comparison. Experiment 3 showed that 18 month olds could rotate an object to align its major axis to the direction of their own hand motion and Experiment 4 showed that they could align the major axis of one object to that of another object of the exact same 3-dimensional shape. The results are discussed in terms of theories of the development of 3-dimensional shape representations, visual object recognition, and the role of action in these developments.</p>
</div>
</front>
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<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
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<front><journal-meta><journal-id journal-id-type="nlm-journal-id">2985128R</journal-id>
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<journal-id journal-id-type="nlm-ta">J Exp Child Psychol</journal-id>
<journal-id journal-id-type="iso-abbrev">J Exp Child Psychol</journal-id>
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<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
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<title-group><article-title>Using the axis of elongation to align shapes: Developmental changes between 18 and 24 months</article-title>
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<contrib-group><contrib contrib-type="author"><name><surname>Smith</surname>
<given-names>Linda B.</given-names>
</name>
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<contrib contrib-type="author"><name><surname>Street</surname>
<given-names>Sandra</given-names>
</name>
</contrib>
<contrib contrib-type="author"><name><surname>Jones</surname>
<given-names>Susan S.</given-names>
</name>
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<contrib contrib-type="author"><name><surname>James</surname>
<given-names>Karin H.</given-names>
</name>
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<aff id="A1">Department of Psychological & Brain Sciences, Indiana University, Bloomington, Indiana</aff>
</contrib-group>
<author-notes><corresp id="cor1">Corresponding Author: Linda B. Smith, 1101 E. Tenth Street, Indiana University, Bloomington, IN 47405, 812-855-8256 lab, <email>smith4@indiana.edu</email>
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<pub-date pub-type="nihms-submitted"><day>30</day>
<month>4</month>
<year>2014</year>
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<pub-date pub-type="epub"><day>17</day>
<month>3</month>
<year>2014</year>
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<pub-date pub-type="ppub"><month>7</month>
<year>2014</year>
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<pub-date pub-type="pmc-release"><day>01</day>
<month>7</month>
<year>2015</year>
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<volume>123</volume>
<fpage>15</fpage>
<lpage>35</lpage>
<pmc-comment>elocation-id from pubmed: 10.1016/j.jecp.2014.01.009</pmc-comment>
<permissions><copyright-statement>© 2014 Elsevier Inc. All rights reserved.</copyright-statement>
<copyright-year>2014</copyright-year>
</permissions>
<abstract><p id="P1">An object’s axis of elongation serves as an important frame of reference for forming 3-dimensional representations of object shape. By several recent accounts, the formation of these representations is also related to experiences of acting on objects. Four experiments examined 18- to 24-month-old (<italic>N</italic>
= 103) infants’ sensitivity to the elongated axis in action tasks that required extracting, comparing and physically rotating an object so that its major axis was aligned with that of a visual standard. In Experiments 1 and 2, the older infants precisely rotated both simple and complexly shaped 3-dimensional objects in insertion tasks in which the visual standard was the rectangular contour defining the opening in a box. The younger infants performed poorly. Experiments 3 and 4 provide evidence on emerging abilities in extracting and using the most extended axis as a frame of reference for shape comparison. Experiment 3 showed that 18 month olds could rotate an object to align its major axis to the direction of their own hand motion and Experiment 4 showed that they could align the major axis of one object to that of another object of the exact same 3-dimensional shape. The results are discussed in terms of theories of the development of 3-dimensional shape representations, visual object recognition, and the role of action in these developments.</p>
</abstract>
<kwd-group><kwd>Shape</kwd>
<kwd>visual object recognition</kwd>
<kwd>perception-action</kwd>
<kwd>infancy</kwd>
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</front>
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<name sortKey="Smith, Linda B" sort="Smith, Linda B" uniqKey="Smith L" first="Linda B." last="Smith">Linda B. Smith</name>
<name sortKey="Street, Sandra" sort="Street, Sandra" uniqKey="Street S" first="Sandra" last="Street">Sandra Street</name>
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