Using the axis of elongation to align shapes: Developmental changes between 18 and 24 months
Identifieur interne : 000C97 ( Main/Exploration ); précédent : 000C96; suivant : 000C98Using 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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Le document en format XML
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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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<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>
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<name sortKey="Jones, Susan S" sort="Jones, Susan S" uniqKey="Jones S" first="Susan S." last="Jones">Susan S. Jones</name>
<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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