Habituation of looking time has become the standard method for studying cognitive processes in infancy. This method has a long history and derives from the study of memory and habituation itself. Often, however, it is not clear how researchers make decisions about how to implement habituation as a tool to study processes such as categorization,…

Infants exposed to a set of artificially-created face stimuli having distinct mean and modal prototypes showed a pattern of behavior predicted by category abstraction models. Infants appeared to abstract, at the time of learning, a feature-count summary of the category displayed. (Author/RH)

Two experiments investigated infants' use of structural relations in dividing schematic drawings of animals into categories. Results demonstrated subjects' sensitivity to structural information like that thought by Rosch (1978) to exist in the natural world and their ability to segregate items into categories on the basis of clusters of correlated…

Two experiments assessed the importance of form versus function in 2-year-old infants' categorizations. Nonsense objects were constructed to independently vary form and function. Adults differentially directed subjects' attention to one or the other stimulus dimension. It was hypothesized that children's conceptualizations would vary as a function…

The study examined the classification scheme of the Ainsworth Strange Situation measure of attachment security with 44 insecurely attached 13-month olds from a high-social-risk sample. Results supported the existence of an additional category of infants whose attachment behavior was "avoidant/ambivalent" and whose families were…

Two experiments using the habituation-dishabituation paradigm examined infants' ability to form and retrieve a basic-level category. Results indicated that infants categorized when tested immediately and after a five-minute delay. (PCB)

The role of variation as a determinant of infant categorical responding was investigated in three studies of infants 7 to 7 1/2 months of age. Sixty-three infants, divided into groups of 21 each, were habituated to color slide poses of either one, two, or six different adult female faces. Their responses to a novel pose of a familiar face and a…

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)

Infants were tested in three studies of the acquisition and long-term retention of category-specific information. Results document retention of category-specific information after intervals of two weeks. (PCB)

Examines developmental change in 4- 7- and 10-month-old infants' perceptions of correlations among attributes to determine whether relational information plays a role in abilities ranging from the perception and recognition of a simple pattern to the formation of a category. (HOD)

This follow-up study, which was part of a larger ongoing longitudinal project, compared early infant-parent attachment relationships to aspects of both parents' and children's mental representations of attachment when children were 6 years old. The sample consisted of 50 mothers, fathers, and children of predominantly upper-middle class social…

Reviews the research literature on the abilities of infants to categorize visual information on dot patterns; schematic faces; hue; and orientation. (HOD)

This manual outlines a coding system for the categorization of social action performed in talking, in the context of mother-infant interaction. The system, constructed for investigating the acquisition of language for social-communicative purposes, codes talk on two levels: the single utterance, and the interchange. Both kinds of units are defined…