Abstract
Two human infants, 2–3 months of age, were tested by a forced-choice preferential looking technique, for the detection of chromatic and white stimuli superimposed on a white adapting field. Three adults were also tested by the method of adjustment in the same apparatus. Both adult and infant curves were relatively flat, as expected under white-adapted conditions. The adults were about 1 Lu. more sensitive than the infants in absolute terms, but the relative spectral sensitivity curves were similar. The results help to justify the use of adult spectral sensitivity curves as a first approximation to infant values, but do not eliminate the need for careful brightness controls in studies of infant color vision.
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