Rewards during learning activate the __________________

This equipment, used to measure depth perception in infants, consists of a piece of heavy glass. A checkered pattern appears under one half of the glass sheet, making it seem that the infant was on a stable floor

On the other half of the glass, the pattern dropped down several feet. This equipment is known as a a. cleft palate. c. cliff hanger. b. visual cliff. d. visual cleft.

Three-year-old Paul's self-awareness is strengthening. He describes himself as "big" and "really fast," and says he is happy when he plays with friends. Paul is beginning to develop a

A) subjective id. B) restrained superego. C) self-concept. D) moral self.