Abstract
The author investigated the unfavorable conditions of various fields caused by abnormal sense of colour. When an applicant applies for a position or want to enter a university, he has been generally rejected if found colour-blind. He has been accepted or treated as a successful candidate if found slightly colour-blind. With about one hundred students of abnormal sense of colour, the author investigated its unfavorable influence on their studies and daily lives, in and out of school as well as home for six months (Sept. l964 to Dec. l964). As those of abnormal sense of colour are different in their degree of abnormality, it is not advisable based on the collective classification of red-blindness and slight red-blindness ; 2 Each individual varies in the extent of unfavorable influence of red-green blindness and slight red-green blindness; 3 Unfavorable influence was not found on Japanese language, mathemetics, English, music, and Health and Physical Education of junior high school curriculums; 4 Unfavorable influence was sometimes observed in social studies, science, fine arts, daily life out of school and home lived.
