Sentence Severity and Crime: Accepting the Null Hypothesis

The literature on the effects of sentence severity on crime levels has been reviewed numerous times in the past twenty-five years. Most reviews conclude that there is little or no consistent evidence that harsher sanctions reduce crime rates in Western populations. Nevertheless, most reviewers have been reluctant to conclude that variation in the severity of sentence does not have differential deterrent impacts. A reasonable assessment of the research to date-with a particular focus on studies conducted in the past decade-is that sentence severity has no effect on the level of crime in society. It is time to accept the null hypothesis.