Which of the following statements about alcoholism is true?
A) Studies show little or no genetic involvement in alcoholism.
B) In men, alcoholism usually begins in the twenties and thirties.
C) Contrary to popular belief, alcoholics can and do limit their alcohol use.
D) Alcoholism crosses SES and ethnic lines but is higher in some groups than others.
D
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The DSM definition of mental disorder excludes impairment in social functioning.
Answer the following statement true (T) or false (F)
Which of the following statements regarding fraternal twins is FALSE?
a. They are produced when two ova are released and each unites with a sperm. b. They may be of the same or opposite sex. c. The twins develop from the same zygote. d. The genetic traits of the two twins can be as different or as similar as those of any other two siblings.