Document Detail

Infants' development of object permanence: a refined methodology and new evidence of Piaget's hypothesized ordinality.
MedLine Citation:
PMID:  1132268     Owner:  NLM     Status:  MEDLINE    
To investigate Piaget's theory of object concept development, a series of 6 tasks was administered in a combined longitudinal/cross-sectional design incorporating a number of methodological controls. The tasks spanned the entire sensorimotor period and included single versus sequential displacements combined with visible or invisible hidings. 36 infants from 5 to 32 months of age at initial testing were drawn equally from day-care and home settings. All infants received the 6 tasks during each of 3 testing sessions over a 6-month period. Clear evidence was obtained for task ordinality as proposed by Piaget, with ordinality coefficients ranging from .71 to .82 for the 3 testing sessions. Performance changes across the 3 sessions were also ordinal in 80% of the cases. Expected age, task, and session effects and accompanying interactions were also obtained.
J A Kramer; K T Hill; L B Cohen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Child development     Volume:  46     ISSN:  0009-3920     ISO Abbreviation:  Child Dev     Publication Date:  1975 Mar 
Date Detail:
Created Date:  1975-09-05     Completed Date:  1975-09-05     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0372725     Medline TA:  Child Dev     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  149-55     Citation Subset:  IM    
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MeSH Terms
Age Factors
Child Day Care Centers
Child Development*
Child, Preschool
Concept Formation
Object Attachment*
Psychological Theory
Sex Factors
Social Environment

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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