Global ETD Search

1	A Study of Dark Adaption of Freshman High School Girls and Boys Williams, Ollie Ann January 1941 (has links) The children in this study were tested in their normal environment and without any effort to change this environment. It was felt that only through such an experiment could any evidence be gained regarding the influence of climatic conditions on the dark adaption of adolescents. dark adaption freshman boys girls
2	Further Studies on the Dark Adaptation of Elementary School Children Gary, Lois W. January 1941 (has links) The present study is part of a long time cooperative study of the Education and Home Economics Departments of North Texas State Teachers College begun in 1940. The purpose is to compare the dark adaptations of second and third grade children made in 1940 with those made in 1941, and to determine also the dark adaptation of a group of fifth and sixth grade children receiving vitamin A concentrate. dark adaption children Night vision. Eye -- Adaptation.
3	Vitamin A Administration and Dark Adaption of Second and Third Grade Children Silk, Maurice Raper January 1940 (has links) This study was formulated for the following purposes: (1) To determine if a learning factor is involved when repeated tests are made with a dark adaption instrument, (2) To determine if the dark adaption of a group of second and third grade children showing poor dark adaption can be improved by the daily administration of Haliver oil capsules, (3) To obtain a dark adaption curve for two hundred twenty-three grade children of Denton, Texas. dark adaption Vitamin A children Night vision. Eye -- Adaptation. Vitamin A -- Therapeutic use.

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