Lewis and Brooks-Gunn (1979) put a red spot on the noses of children who were 9, 12, and 18 months old. The children then viewed themselves in mirrors. At what age did the children rub their noses, recognizing the image was their own?

The paper in the book that Jerome is reading appears to be white regardless of whether

he is reading the book outdoors or inside his apartment and regardless of whether he is sitting in the shade, in the sun, or under a lamp. Jerome's perception of the color of the paper is an example of the principle called a. haze. b. brightness constancy. c. the illumination illusion. d. perceptual invariance. e. shading.

According to Maslow, the most basic needs to be met are _______

a. safety needs b. esteem needs c. physiological or biological needs d. belongingness needs