Peer reviewed
ERIC Number: EJ118028
Record Type: Journal
Publication Date: 1975
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Infants' Development of Object Permanence: A Refined Methodology and New Evidence for Piaget's Hypothesized Ordinality
And Others; Kramer, Judith A.
Child Development, 46, 1, 149-155, Mar 75
An investigation of Piaget's theory of object concept development through a series of six tasks administered in a combined longitudinal/cross-sectional design (which incorporated a number of methodological controls). Subjects were 36 infants who received the six tasks during each of three testing sessions over a 6-month period. (Author/ED)
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