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Hannaford, Alonzo E.1
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The Ability of Color-Vision Defective and Color-Normal Early Elementary and Junior High Students to Utilize Color. Final Report.
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Cook, Ann C. N.; Hannaford, Alonzo E. – 1972
The investigation was undertaken to obtain data on the number of kindergarten, second, and seventh grade Ss classified as having color vision defects by the American Optical-Hardy, Rand, Rittler Test (AO-HRR) and two tests by S. Ishihara. Also studied was the ability of color vision defective and color normal Ss to utilize color as measured by the…
Descriptors: Classification, Color, Elementary School Students, Exceptional Child Education