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A NEW CONTROL MARKER FOR ORIENTATION WITH SPECIAL REGARD TO PERSONS WITH DEFECTIVE COLOUR VISION

In order to design a new control marker (CM) that would provide the same visibility for color-defective and color- normal people, two field experiments were carried out. In the first experiment a sample of color-normals and color- defectives judged the relative visibility of some theoretically chosen and two existing CMs with paired comparisons. The results showed great differences between the two S-groups. While the color-defectives preferred a yellow-blue-white CM, the color-normals considered this one second best but preferred an orange-white-blue CM. In the second experiment, the absolute visibility of the best CMs in the first experiment was studied. Detection frequencies were compared between the two S-groups for three types of CM, the two types mentioned above and a yellow-blue-white CM in fluorescent colors. The differences between the two S-groups were smallest for the yellow-blue-white CM, with somewhat higher detection frequencies for the fluorescent type. The difference for the orange-white-blue CM was strikingly large. The results from the two experiments, carried out with completely different methods, support each other in every important aspect. Evidently a CM with the colors yellow, blue and white has the same visibility for color-defective and color-normal peopel. /Author/

  • Supplemental Notes:
    • Sponsored by Swedish Sports Research Council.
  • Corporate Authors:

    Uppsala University, Sweden

    ,   Sweden 
  • Authors:
    • Rumar, K
    • Ost, A
  • Publication Date: 1973

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 20 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00098850
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Report/Paper Numbers: No. 143
  • Files: TRIS
  • Created Date: Oct 18 1975 12:00AM