About half of all violent crimes are committed under the influence of
alcohol. This study examined whether limiting legal access to alcohol
for certain age groups affected the commission of selected crimes by i
ndividuals in those age groups. Arrest data from the Uniform Crime Rep
orts were analyzed in relation to changes in the drinking age in the r
ange 18 to 21 years. For aggravated assault and for other assaults no
significant reductions were found, but for vandalism and disorderly co
nduct significant reductions on the order of 10 percent were found. Th
ere were indications of a slight reduction in ''other'' assaults, a gr
eater reduction in vandalism, and an even greater reduction in disorde
rly conduct: the effect of limiting legal access to alcohol increased
with decreasing severity of the crime. Blood alcohol information from
the Fatal (motor vehicle) Accident Reporting System was studied also.
The proportion of killed drivers with blood alcohol decreased when leg
al access was limited. However, no relation between these decreases an
d decreases in arrests for the crimes studied was found across the sta
tes studied.