title: The development of object categorization in young children: hierarchical inclusiveness, age, perceptual attribute, and group versus individual analyses.
abstract: Multiple levels of category inclusiveness in 4 object domains (animals, vehicles, fruit, and furniture) were examined using a sequential touching procedure and assessed in both individual and group analyses in eighty 12-, 18-, 24-, and 30-month-olds. The roles of stimulus discriminability and child motor development, fatigue, and actions were also investigated. More inclusive levels of categorization systematically emerged before less inclusive levels, and a consistent advantage for categorizing high versus low perceptual contrasts was found. Group and individual analyses generally converged, but individual analyses added information about child categorization over group analyses. The development of object categorization in young children is discussed in light of efficiency of processing and similarity-differentiation theories.
authors.affiliation: Child and Family Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Rockledge 1, Suite 8030, 6705 Rockledge Drive, MSC 7971, Bethesda MD 20892-7971, USA. Marc_H_Bornstein@nih.gov
authors.forename: Marc H
authors.initials: MH
authors.lastname: Bornstein
authors.forename: Martha E
authors.initials: ME
authors.lastname: Arterberry
mesh_terms: D000367:Age Factors; D002657:Child Development / Q000502:physiology*; D002675:Child, Preschool; D003210:Concept Formation / Q000502:physiology*; D004193:Discrimination Learning / Q000502:physiology*; D005221:Fatigue / Q000503:physiopathology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009483:Neuropsychological Tests; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011597:Psychomotor Performance / Q000502:physiology; D012737:Sex Factors; D055698:Touch Perception / Q000502:physiology*