Biomedical subjects
Publications and source records attributed to A G Barclay.
WAIS subtest scores for three samples of instiutionalized retardates, from the East Coast (n = 509), West Coast (n = 436), and Midwest (n = 113) were compared. The Midwest sample norms diverged most from the remaining two sets, but the most significant findings was the heterogeneity of the intratest variance, suggesting the influence of exogenous factors related to the institutional setting.
There have only been a few attempts to assess whether eidetic imagery is inversely related to age. A sample of 15 known eidetikers from a previous study, having particular forms of brain damage, were retested after a lapse of 20 months. The hypothesis of the study was that older children are most likely to lose their capacity for seeing eidetic images over a period of 20 months than are younger children. The data confirmed the hypothesis and was interpreted as supporting the theory that eidetic imagery is a developmental process that decreases in importance over the course of a child's development.
A sample of 75 mentally retarded children, including 14 with arrested hydrocephalus, 39 with other diagnoses of brain damage, and 22 familial cases, was tested for eidetic imagery, in order to clarify the relationship between eidetric imagery and neuropathology. The hypotheses tested were that the frequency of eidetic imagery is higher among hydrocephalics than among other brain-damaged children and higher among hydrocephalics than among familials. The data confirmed the hypotheses and are interpreted as supporting a theory in which particular structural impairments in the visual system may delay neural development and result in a persistance of eidetic imagery.
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Explore the source record for details and available documents.