Abstract
A replication of Mitchell and Pollack (1974) has substantiated the relation between color form perception and fundus pigmentation in free viewing task performance. Furthermore, reducing available light induced a comparable performance decrement in lightly pigmented subjects, indicating the peripheral nature of the phenomenon. Performance of the Wechsler-Bellevue block-design subtests, Forms I and II, in both red/white and blue/yellow conditions by all subjects, produced a performance decrement for darkly pigmented subjects in the blue/yellow condition regardless of lighting levels. Lightly pigmented subjects exhibited no performance difference by color with sufficient lighting.
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