Abstract
This paper exploits a dynamic panel data model to analyze the endogeneity of certain deterrent covariates, measurement errors in crime and inertial features of crime, and to check for unobserved heterogeneity in order to extract more precise and reliable estimates of the deterrent effect of law enforcement in North Carolina. It uses panel data on 90 counties of North Carolina over the period 2003–2012. After checking various socioeconomic covariates, among the deterrent variables, likelihood of arrest and conviction always showed deterrent effects on criminal behavior for different kinds of violent and property crimes. Since property crimes have relatively higher inertia than violent crimes, their associated long-run elasticities with respect to significant deterrence variables are greater, which implies that allocating more resources to increasing the likelihood of arrest for property crimes can effectively decrease them in the long run.
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Notes
The results of different identification tests are available on request.
However, using the updated data set, we tested Baltagi’s conjecture on consistency of the EC2SLS estimator. In our case, the Hausman-type test based on difference between FE2SLS and EC2SLS rejected the consistency of EC2SLS.
For a comprehensive explanation of instrument proliferation in DPD models, see Roodman (2009a).
We apply the command “xtabond2” for estimation of Difference GMM and System GMM in Stata. It is easy to restrict the number of instruments by the options available in this command.
The long-run effect is calculated as \(\frac{\beta }{1-\alpha _1}\), where \(\beta \) is estimated short-run elasticity and \(\alpha _1\) is the estimated coefficient for lagged crime rate.
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Ghasemi, M. Crime and punishment: evidence from dynamic panel data model for North Carolina (2003–2012). Empir Econ 52, 723–730 (2017). https://doi.org/10.1007/s00181-016-1093-5
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DOI: https://doi.org/10.1007/s00181-016-1093-5