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Effect of Verbal Response Class on Shift in the Preschool Child's Judgment of Length in Response to an Anchor Stimulus
Salzinger, Suzanne; And Others – Develop Psychol, 1970
Descriptors: Discrimination Learning, Perceptual Development, Verbal Learning, Visual Stimuli
Sensory Organization in Retardates and Normals
Stayton, Samuel E. – Develop Psychol, 1970
Descriptors: Mental Retardation, Organization, Perceptual Development, Responses
Individual Differences in the Infant's Distribution of Attention to Stimulus Discrepancy
McCall, Robert B.; Kagan, Jerome – Develop Psychol, 1970
Results of this study of 72 4-month-old infants suggest caution in using an overt demonstration of habituation as a necessary index of perceptual learning. (Author/MG)
Descriptors: Attention Span, Infant Behavior, Perceptual Development, Reaction Time
Concept Learning in Discrimination Tasks
Caldwell, Edward C.; Hall, Vernon C. – Develop Psychol, 1970
Descriptors: Concept Formation, Discrimination Learning, Learning Processes, Perceptual Development
A Comparison of Retardates and Normals on the Poggendorff and Oppel-Kundt Illusions
Spitz, Herman H.; And Others – Develop Psychol, 1970
Contrary to Piaget's predictions, adolescent retardates and 9-year-old normals were more susceptible to the Oppel-Kundt Illusion than high school sophomores and adults. No group differences were found on the Poggendorf Illusion. (MH)
Descriptors: Age Differences, Cognitive Development, Handicapped Children, Mental Retardation