Summary

Experimental methods have been a hallmark of the scientific enterprise since its inception. Over time, experiments have become much more sophisticated, complex, and nuanced. Experiments have also become much more diverse, and their use within research settings has expanded from the physical sciences to the social sciences, including criminology.

Within criminology, experimental methods can manifest in the form of laboratory experiments, field experiments, and quasi-experiments, each of which present their own strengths and weaknesses. Experimental methods can also be applied in the context of between-subject and within-subject paradigms, both of which exhibit unique characteristics and implications. Experimental methods—as a research method—are unique in their ability to help establish causal relationships among variables. This article introduces the topic of experimental methods in criminology, with a specific focus on the subfield of policing.