Public
policymakers often want to reduce the amount that people smoke. There are two
ways that policy can attempt to achieve this goal.
One way to
reduce smoking is to shift the demand curve for cigarettes and other tobacco
products. Public service announcements mandatory health warnings on cigarette
packages, and the prohibition of cigarettes advertising on television are all
policies aimed at reducing the quantity of cigarettes demanded at any given
price. If successful these shift the demand curve for cigarettes to the left as
in panel.
Alternatively,
policymakers can try to raise the price of cigarettes. If the government taxes
the manufacture of cigarettes for example cigarettes companies pass much of his
tax on to consumers in the from of higher prices. A higher price encourages
smokers to reduce the numbers of cigarettes they smoke. In this case the
reduced amount of smoking does not represent a shift in the demand curve.
Instead it represents a movement along the same demand curve to a point with a
higher price and lower quantity as in panel.
How much
does the amount of smoking respond to changes in the price of cigarettes?
Economists have attempted to answer this question by studying what happens when
the tax on cigarettes changes. They have found that a 10 percent increase in
the price causes a 4 percent reduction in the quantity demanded. Teenagers are
found to be especially sensitive to the price of cigarettes: A 10 percent
increase in the price causes a 12 percent drop in teenage smoking.
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