Xandra, age 10, has recently grown 5 inches in height. Xandra is undergoing:
A) development of her primary sexual characteristics.
B) size acceleration.
C) development of her secondary sexual characteristics.
D) the growth spurt.
Ans: D) the growth spurt.
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All of the following may protect us against sexually transmitted diseases EXCEPT
a. having regular medical checkups. b. avoiding multiple partners. c. avoiding sexual behavior that results in orgasm. d. communicating concerns to one's partner. e. abstinence.
The Big Five traits
a. are expressed only in individuals in Western societies. b. are genetically influenced. c. emerge late in life. d. are not considered to be dispositional traits.
Nerve growth factor (NGF) ____
a. promotes the survival and growth of the axon b. is a fuel metabolized by neurons c. promotes programmed cell death d. is a hormone first released at puberty
Use of which of the following substances is most likely to provoke aggression?
a. LSD b. alcohol c. tobacco d. MDMA (ecstasy)