Color discrimination across four life decades assessed by the Cambridge Colour Test

Paramei, Galina V. (2012) Color discrimination across four life decades assessed by the Cambridge Colour Test. Journal of the Optical Society of America A, 29 (2). pp. 290-297. ISSN 1084-7529

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Abstract

Color discrimination was estimated using the Cambridge Colour Test (CCT) in 160 normal trichromats of four life
decades, 20–59 years of age. For each age cohort, medians and tolerance limits of the CCT parameters are tabulated.
Compared across the age cohorts (Kruskal–Wallis test), the Trivector test showed increases in the three
vectors, Protan, Deutan, and Tritan, with advancing age; the Ellipses test revealed significant elongation of the
major axes of all three ellipses but no changes in either the axis ratio or the angle of the ellipse major axis. Multiple
comparisons (Mann–Whitney test) between the cohorts of four age decades (20�;…; 50�) revealed initial benign
deterioration of color discrimination in the 40� decade, as an incremental loss of discrimination along the Deutan
axis (Trivector test), and in the 50� decade, as an elongation of the major axes of all three ellipses (Ellipses
test).

Item Type:	Article
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Faculty / Department:	Faculty of Human and Digital Sciences > School of Psychology
Depositing User:	Users 3 not found.
Date Deposited:	05 Mar 2014 15:37
Last Modified:	05 Mar 2014 15:37
URI:	https://hira.hope.ac.uk/id/eprint/209

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