After school-age children establish a dominance hierarchy, ________.
A. aggression increases
B. rough-and-tumble play decreases
C. hostility is rare
D. cheating during invented games is common
Answer: C
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According to national surveys, currently the three illicit substances most likely to be used by underage teens are cigarettes, marijuana, and
a. other illicit drugs. b. prescription narcotics. c. heroin. d. alcohol.
How could a test's validity be checked?
A. Let subjects take the test several times within one month. B. Correlate subjects' scores with their scores from a test with proven validity. C. Some subjects take the first half of the test while others take the second half, and then the scores are compared. D. Develop two versions of the same test and examine the correlation between the two scores.
In terms of physical aging, what is the difference between adults who are considered athletes versus nonathletes?
A. Athletes experience more subtle and gradual declines in physical abilities from the late 30s to the 60s. B. Nonathletes experience more gradual declines because of less damage to ligaments and tendons. C. The muscles and motor skills of nonathletes are more susceptible to damage due to infrequent but more strenuous use. D. Athletes age faster in early adulthood, but the declines are not as noticeable until they reach middle age.
In a myelinated neuron, the action potential:
A) Travels more slowly than in an unmyelinated neuron B) Jumps from synapse to synapse C) Is conducted down the uninsulated parts of the dendrites D) Travels faster than in an unmyelinated neuron