Compared with non-twin siblings, fraternal twins
A. experience the same level of genetic and environmental influence.
B. have more genes in common.
C. have fewer environmental influences in common.
D. have more environmental influences in common.
Answer: D
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Sleepwalking and night terrors occur during:
A. Stage 1 sleep B. REM sleep C. sleep spindles D. Stage 4 sleep
Which of the following is an example of projection?
A. A man is angry with his wife, so he yells at his employee. B. A man denies that he is angry with his wife. C. A man is angry with his wife, but says that she is the one who is angry. D. A man makes up excuses for why he is angry with his wife.
Approximately how many hours per day do adolescents spend listening to music?
A) 9 B) 6 C) 3 D) 1.5
The most extreme symptom of cardiovascular disease is
A) a heart attack. B) atherosclerosis. C) angina pectoris. D) arrhythmia.