EXAMINING THE CONDITIONAL NATURE OF THE ILLICIT DRUG MARKET‐HOMICIDE RELATIONSHIP: A PARTIAL TEST OF THE THEORY OF CONTINGENT CAUSATION

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Abstract
Recently, Zimring and Hawkins (1997) have suggested that drug markets are a “contingent cause” of the increase in homicide rates. That is, where structural conditions known to produce violence are already in place, the drug distribution‐homicide link may be exacerbated. This analysis uses hierarchical linear modeling to investigate two key research questions: (1) Is within‐city variation in illicit drug market activity positively associated with within‐city variation in homicide rates during the 1984–1997 period? (2) Is the illicit drug market‐homicide association contingent on preexisting violence conducive socioeconomic conditions? Using three measures of drug market activity, analyses provide affirmative evidence on both questions. Theoretical and research implications of these findings are discussed.