Two infants of different ages, Diego and Hannah, are tested with the preferential-looking technique to determine their visual acuity. A series of black and white striped patterns are presented individually next to a grey square. Diego can distinguish stripes that are narrower than the stripes Hannah can distinguish. Compared with Hannah, Diego has
A)a smaller retina.
B)better object segregation.
C)more cones.
D)better contrast sensitivity.

Question

Quizplus · Accepted Answer

Diego's ability to distinguish narrower stripes indicates he has better contrast sensitivity, which is the ability to detect differences in light and dark areas.

Two Infants of Different Ages, Diego and Hannah, Are Tested