In Reply: Dr Lott's econometric suggestions
are problematic. It is well known that arrest rates have a spurious negative
correlation with the crime rate, since the latter constitutes the denominator
of the former.1 Introducing an "independent"
variable that is codetermined with the dependent variable will generally bias
all coefficient estimates.
Due to data limitations, Lott's suggestion to examine the effects of
the Brady Act on other crimes such as rape is not feasible. State-level data
for these crimes are not available disaggregated by the age of the victim
or offender. Based on the specification test reported in our study for gun
homicides, we concluded that comparing trends in Brady Act "treatment" and
"control" states using data for victims of all ages will produce biased results.
Since the Brady Act was not targeted at stopping sales to underage buyers,
our approach was to focus on homicides in which the shooter was aged 21 years
and older. For homicides among victims aged 21 years and older during 1990
to 1998, in fully 78% of cases in which there was a known suspect, the suspect
was aged at least 21 years. Contrary to the assertion of Drs Kleck and Marvell,
the corresponding figure for victims younger than 21 years was only 49%.2
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Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature
Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal
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