The work of Helmholtz served to strengthen the experimental approach to the study of psychological questions

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:

A) object permanence B) reversibility C) conservation D) abstract thinking

When you ride the subway in the morning on the way to work, you often see the same stranger day in and day out. According to the mere exposure effect, over time you are likely to view this stranger:

a. in a neutral way. b. more critically. c. less favorably. d. more favorably.