__________ vision, the ability to combine the images coming to each eye to see depth and motion, is achieved at around fourteen weeks

Maccoby and Jacklin (1974) concluded that boys and girls differed in their abilities in what areas?

a. Girls have greater verbal abilities. b. Girls have lesser verbal abilities. c. Girls have greater mathematical abilities. d. Girls have greater visual-spatial abilities.

Jake is playing hide-and-seek with his mother. Jake runs

over to the couch and hides his head under a pillow. Because Jake cannot see anything, he doesn't think his mother can see him. Jake is exhibiting a behavioral characteristic of which of Piaget's cognitive stages of development? a. postformal stage b. concrete operational stage c. formal operational stage d. preoperational stage