Thèse (M.Med.Exp.) -- Université du Québec à Chicoutimi, extensionné de l'Université Laval, 1997. / Bibliogr.: f. [70]-76. Document électronique également accessible en format PDF. CaQCU

Afhandling - Copenhagen. / Summary in English and Danish.

No description available.

The goal of this study was to examine selective attention and distractibility within the visual modality in children with Down syndrome as compared to children of normal intelligence matched for mental age. Selective attention was defined as the children's abilities to identify and respond to a target stimulus on a forced choice reaction time task. Distractibility was considered to be the extent to which the children's performances on the task were interfered with by extraneous stimuli in the visual field. Conditions on the task varied with regard to the presence or absence and location (close and far) of distracting stimuli and the presence or absence and size (small, medium and large) of boundary cues. Participants included 10 children with Down syndrome and 10 children of normal intelligence matched for mental age. The primary finding of this study was that the performance of children with Down syndrome was more adversely affected by the presence of distractors than that of the children of normal intelligence. This finding indicates that children with Down syndrome suffer from selective attention deficits and increased distractibility. The selective attention of children with Down syndrome is characterized as distractor-controlled as a result of a defective attentional (zoom) lens that "wanders" in visual space.

Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 92-94).

Thesis--University of Washington. / Vita. Another copy has number: Thesis 27600. Bibliography: leaves [58]-65.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1969. / Typescript. Vita. Includes bibliography.

Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 52-64).

The purpose of the study was to determine the morphological capillary pattern of the mongoloids and compare this with another constitutionally retarded clincial group - the phenylketonurics- and the degree of deviation from the "normal" pattern. Photomicrographs were taken with capillary microscope and the capillaries were analysed into the ten basic morphological categories as set out by Gibson, Bosley and Griffiths (1956). It was concluded that the mongoloids and the phenylketonurics differed significantly in the amount of primitive immature configuration they displayed. The hypothesis of Powdermaker (1929) that structure is related to function, was found tenable through a capillaroscopic examination of scholastically retarded school children. / Medicine, Faculty of / Graduate

No description available.