The paper in the book that I am reading appears to be white regardless of whether I am reading the book outside or inside and regardless of whether I am sitting in the shade, in the sun, or under a lamp. My perception of the colour of the paper is an example of
A) haze.
B) brightness constancy.
C) the illumination illusion.
D) perceptual reactance.
E) shading.

Question

Quizplus · Accepted Answer

Brightness constancy is a feature of human vision where the perceived brightness of objects remains constant under varying illumination conditions. This explains why the paper appears white whether you're reading in sunlight, shade, or artificial light.

The Paper in the Book That I Am Reading Appears