A 4-year-old child is shown a row of seven red checkers. He is asked to place a black checker immediately above each red one. By doing so, the child agrees that there are as many red as black checkers. The experimenter then spreads out the black checkers so that the line they form is longer than the one formed by the red checkers. The experimenter asked whether there are more red checkers or more black checkers in order to determine whether the child understands:

Which person represents the typical living arrangements among the elderly in the United States?

a) Bill, who lives in his own house b) Alexis, who lives in a group home c) Barry, who lives in a mental hospital d) Penny, who is living in a nursing home

Which of these is an example of motion parallax? a. As you travel, nearby objects pass by faster than distant objects do

b. An illuminated point in a dark room seems to move. c. You feel tension in your eye muscles when you focus on a nearby object. d. When the wind blows the clouds at night, the moon behind them seems to move.