Since 1980 the rate of childhood asthma in the United States has _____.
A. doubled
B. tripled
C. decreased
D. stayed the same
Ans: B. tripled
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Researchers studying plant growth raised plants in two different rooms. One room had soft music playing 24 hours a day; the other room was silent. The researchers found that the plants grew better in the room where the music was played. In this study, the type of room (soft music or silent) would be:
a. the independent variable b. a placebo c. the dependent variable d. a confounding variable
Attitude change via the peripheral route may be more effective if the source of the attitude, is:
a) female b) male c) attractive d) unattractive
Why is automaticity important for cognitive development?
a. Children need to know certain facts quickly. b. Increases in long-term memory are unrelated to short-term processing speed. c. Automaticity allows for more short-term memory processing space. d. Automaticity allows for reversibility abilities.
Which type of child is more likely to experience low social status, aggressiveness, and higher rates of conflict with peers, parents, and teachers?
A. popular B. rejected C. neglected D. controversial