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Luo, Yuyan; Baillargeon, Renee; Brueckner, Laura; Munakata, Yuko – Cognition, 2003
This study examined two alternative interpretations of violation-of-expectation findings that young infants can represent hidden objects. Findings indicated that 5-month-olds succeeded in reasoning about the interaction of a visible and a hidden object even though the 2 objects were never simultaneously visible and a 3- or 4-minute delay preceded…
Descriptors: Cognitive Development, Infant Behavior, Infants, Memory

And Others; Schuberth, Richard E. – Child Development, 1978
Tested two competing hypotheses explaining infants' failure to search for an object in a new hiding place: (1) that the concept of object is not yet differentiated from the concept of place, and (2) that difficulties in spatial localization are responsible for the search failure. (Author/JMB)
Descriptors: Cognitive Development, Fundamental Concepts, Infant Behavior, Infants

Gopnik, Alison; Meltzoff, Andrew – Child Development, 1987
Changes in children's categorization behavior between 15 and 21 months of age and the relation of these changes to developments in language, object permanence, and means-end understanding are reported. (PCB)
Descriptors: Behavior Change, Classification, Cognitive Development, Infant Behavior

Bigelow, Anne E.; And Others – Merrill-Palmer Quarterly, 1995
Two experiments investigated 8-, 10-, and 12-month-old infants' levels of searching for mothers, strangers, and objects. Found that, overall, 10- and 12-month-old infants had higher levels of searching for mothers, whereas youngest infants showed no differences for searching. This discrepancy is likely due to social cognitive development and…
Descriptors: Cognitive Development, Developmental Stages, Infant Behavior, Infants

Butterworth, George – Child Development, 1975
Reports two experiments which were designed to establish whether errors in infants' manual searches for objects are caused by changes in the location of an object or by the change in the relation between old and new hiding places. (JMB)
Descriptors: Cognitive Development, Eye Hand Coordination, Infant Behavior, Object Permanence

Diedrich, Frederick J.; Highlands, Tonia M.; Spahr, Kimberly A.; Thelen, Esther; Smith, Linda B. – Journal of Experimental Child Psychology, 2001
Evaluated in three experiments a dynamic systems theory account of perseverative errors on "A-not-B" task. Found that 9-month-olds perseverated when reaching for identical targets, but made nonperseverative responses when reaching in the presence of a highly distinctive B target. Reach direction was jointly determined by target's…
Descriptors: Cognitive Development, Cues, Error Patterns, Infant Behavior

Mandler, Jean M. – Human Development, 1998
Maintains that Muller and Overton (1998) misrepresent her theory of infant concept formation in infancy, makes corrections to their representation, and notes that her theory was developed in part because of the lack of detailed mechanisms in Piaget's theory to account for concept formation. Argues that Muller and Overton's proposed alternative…
Descriptors: Cognitive Development, Concept Formation, Infant Behavior, Memory
Song, Hyun-joo; Baillargeon, Renee; Fisher, Cynthia – Cognition, 2005
The present research investigated whether 13.5-month-old infants would attribute to an actor a disposition to perform a recurring action, and would then use this information to predict which of two new objects--one that could be used to perform the action and one that could not--the actor would grasp next. During familiarization, the infants…
Descriptors: Infant Behavior, Cognitive Ability, Familiarity, Behavioral Science Research

Wishart, Jennifer G. – Child Development, 1986
Investigates whether 6- to 12-month-old infants' exposure to the successful search behavior of a sibling in two object-concept tasks would enhance infants' subsequent performance on these tasks. (HOD)
Descriptors: Child Development, Cognitive Ability, Cognitive Development, Cognitive Processes
Kaldy, Zsuzsa; Leslie, Alan M. – Cognition, 2005
Infants' abilities to identify objects based on their perceptual features develop gradually during the first year and possibly beyond. Earlier we reported [Kaldy, Z., & Leslie, A. M. (2003). Identification of objects in 9-month-old infants: Integrating "what" and "where" information. Developmental Science, 6, 360-373] that infants at 9 months of…
Descriptors: Memory, Identification, Object Permanence, Infant Behavior

Bertenthal, Bennett I.; Fischer, Kurt W. – Developmental Psychology, 1978
Presents a study of the development of self-recognition in infants from 6 to 24 months of age. The development of self-recognition is compared to the development of object permanence. (BD)
Descriptors: Age Differences, Cognitive Development, Developmental Stages, Infant Behavior
Phillips, Ann T.; Wellman, Henry M. – Cognition, 2005
When and in what ways do infants recognize humans as intentional actors? An important aspect of this larger question concerns when infants recognize specific human actions (e.g. a reach) as object-directed (i.e. as acting toward goal-objects). In two studies using a visual habituation technique, 12-month-old infants were tested to assess their…
Descriptors: Habituation, Cognitive Development, Infant Behavior, Cognitive Psychology

And Others; Kramer, Judith A. – Child Development, 1975
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)
Descriptors: Age Differences, Cognitive Development, Cross Sectional Studies, Developmental Tasks

And Others; Jackson, Elaine – Developmental Psychology, 1978
Presents a study of decalage between object permanence and person permanence. Decalage was influenced by environmental as well as stimulus factors with infants tested between 6- and 81/4-months/of-age. (BD)
Descriptors: Cognitive Development, Developmental Stages, Environmental Influences, Infant Behavior
The Relationship Between Sensorimotor Behaviors and Language in Socioeconomically Depressed Infants.
O'Connell, Joanne Curry; Farran, Dale C. – 1980
The purpose of this study was to determine the relationship between high risk infants' sensorimotor development and their use of intentional communications. Twenty-six 20-month-old infants, selected at birth by use of High Risk Index, were studied. At 15 months of age each infant was administered five scales from the Uzgiris-Hunt Ordinal Scales of…
Descriptors: Child Language, Cognitive Development, Communication Skills, Infant Behavior
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