Integral (holistic) and separable (analytic) processing were studied in ADD-H and normal children using restricted classification tasks composed of separable dimensions and triad/tetrad combinations. In Studies One and Three classifications of ADD-H children and controls were compared on size/brightness and length/density combinations. In Study Two classifications of four age groups of normal subjects (mean ages 5-3, 7-9, 11-1 years and adults) were compared on size-brightness combinations. ADD-H children demonstrated significantly fewer separable responses than normal controls only on the tetrads. Normal subjects showed a developmental trend towards differential separable responding to size as compared to brightness. ADD-H children appear to show a lag of about two years on this developmental trend. Results suggest that ADD-H children resort more readily than normals to integral responding under increased processing load. Results are discussed in terms of the cognitive deficits of ADD-H children and current theories of perceptual differentiation.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.22356 |
| Date | January 1987 |
| Creators | Amin, Kiran |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Psychology.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000554099, proquestno: 8921914, Theses scanned by UMI/ProQuest. |
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