The Priority of Separable Perception in Stimulus Classifications of Children with Mental Retardation

Children (mean CA = 12 years) with mental retardation and adults without mental retardation classified tetrads of stimuli that could be grouped according to identities on separate dimensions or according to overall similarity. When color, size, and line orientation were varied (Experiment 1), both g...

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Bibliographic Details
Published in:Child development 1995-08, Vol.66 (4), p.1057-1071
Main Authors: Cook, Greg, Stephens, J. Todd
Format: Article
Language:English
Subjects:
Abstract Reasoning
Adolescent
Adult
Adults
Age groups
Biological and medical sciences
Child
Child clinical studies
Child development
Child psychology
Children
Children & youth
Classification
Cognitive Development
Cognitive Processes
Cognitive Structures
Concept Formation
Development
Developmental disorders
Humans
Integrality
Intellectual deficiency
Intellectual disabilities
Intellectual Disability
Learning disabled children
Learning Processes
Medical sciences
Mental Retardation
Mental stimulation
Middle Aged
Perception
Perceptions
Perceptual Development
Perceptual similarity
Psychology, Child
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Saliency
Stimulus
Task Performance and Analysis
Visual Perception
Visual Stimuli
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Summary:Children (mean CA = 12 years) with mental retardation and adults without mental retardation classified tetrads of stimuli that could be grouped according to identities on separate dimensions or according to overall similarity. When color, size, and line orientation were varied (Experiment 1), both groups used separate dimensions for classification. When hue, saturation, and brightness varied (Experiment 2), both groups used overall similarity for classification. Test-retest correlations showed that the predominant classifications were reliable across 1-week testing intervals. Results support Garner's distinction between separable and integral stimulus structure but do not support an integral-to-separable shift in perceptual development. Comparisons of the tetrad task used in the present study and triads used in previous work are discussed as well as implications of the present data for developmental theories of perceptual classification and processing in children with mental retardation.
ISSN:0009-3920
1467-8624
DOI:10.2307/1131798