Marijuana

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Term Paper Title	Marijuana
# of Words	748
# of Pages (250 words per page double spaced)	2.99

Marijuana

[Category]:

Social Issues

[Paper Title]:

[Text]:

I. Marijuana causes behavioral changes

A. Chronic Marijuana users become more aggressive

during withdrawal.

People who have smoked marijuana daily for many years display more aggressive
behavior when they stop smoking the drug, according to a new study by
researchers at Harvard Medical School. The study, funded by the National
Institute on Drug Abuse (NIDA), National Institutes of Health, is further
evidence that a withdrawal syndrome is associated with abstinence from long-term
marijuana use, and suggests that aggressive behavior is part of this syndrome.

Human and animal studies conducted since the early 1970's have suggested the
existence of a marijuana withdrawal syndrome, characterized by insomnia,
restlessness, loss of appetite, and irritability. "This syndrome--although
less dramatic than the withdrawal syndrome associated with alcohol, opiate, or
cocaine withdrawal--may contribute to relapse among those dependent on
marijuana," says NIDA Director Dr. Alan I. Leshner. "People addicted
to marijuana may continue to use the drug at least partly to prevent the onset
of withdrawal symptoms. Identifying the exact nature of this syndrome is crucial
to developing treatment strategies for those attempting to stop their marijuana
use."

The Harvard study, using a computer test of aggressive behavior, compared 17
long-term heavy users of marijuana with 20 people who were infrequent or former
smokers. All of the volunteers were abstaining from the use of marijuana and all
other drugs of abuse during the study. To avoid any suggestive influences, the
investigators did not reveal to the volunteers that their aggressive behavior
was being studied. Instead, the volunteers were told that they were
participating in a test designed to measure movements and a variety of
physiological characteristics, such as pulse rate and body temperature. They
were also told that another volunteer of the same sex was sitting in another
experimental chamber and would be participating in the test with them.

Facing each volunteer in the experimental chamber was a computer monitor and
a response panel. On a panel were two buttons, labeled A and B. Pressing A 100
times allowed the volunteer to gain 1 point, which was worth 50 cents. Pressing
B 10 times subtracted 1 point from the other participant, who, in actuality, was
not a person but a computer. Three 1-second beeps signaled that the
"opponent" was subtracting 1...

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