The most common of the psychoactive substances, used by 90 percent of Americans, is
a. nicotine
b. caffeine
c. marijuana.
d. opium.
Question 2From a physiological perspective, the reason that a nicotine addict smokes cigarettes frequently throughout the day is to prevent withdrawal symptoms, which include all of the following EXCEPT
a. irritability.
b. weight loss.
c. depression.
d. difficulty concentrating.
Question 3Nikolay has decided to stop smoking (again). He can expect to experience which of the following withdrawal symptoms?
a. Elevated mood
b. Decreased appetite
c. Weight loss
d. Irritability
Question 4Your shy and introverted friend tells you that she has discovered a wonder drug that produces feelings of euphoria and is not addictive. When you realize that she is talking about cocaine, you inform her that
a. scientists agree that it is wonder drug just as she describes.
b. in the early 20th century cocaine was an ingredient in Pepsi-Cola.
c. cocaine will make her more social and outgoing.
d. dependence on cocaine develops slowly over a period of years.
Question 5Stimulation of the ________ neurons in the pleasure pathway (the site in the brain that seems to be involved in the experience of pleasure) probably causes the high associated with cocaine use.
a. dopamine
b. serotonin
c. adrenaline
d. endorphin
Question 6Which of the following effects is associated with cocaine use?
a. Decreased alertness
b. Increased appetite
c. Decreased pulse and blood pressure
d. Rapid and irregular heartbeat
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