Does research design affect study outcomes in criminal justice?

David Weisburd*, Cynthia M. Lum, Anthony Petrosino

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

1 Scopus citations

Abstract

Does the type of research design used in a crime and justice study influence its conclusions? Scholars agree in theory that randomized experimental studies have higher internal validity than do nonrandomized studies. But there is not consensus regarding the costs of using nonrandomized studies in coming to conclusions regarding criminal justice interventions. To examine these issues, the authors look at the relationship between research design and study outcomes in a broad review of research evidence on crime and justice commissioned by the National Institute of Justice. Their findings suggest that design does have a systematic effect on outcomes in criminal justice studies. The weaker a design, indicated by internal validity, the more likely a study is to report a result in favor of treatment and the less likely it is to report a harmful effect of treatment. Even when comparing randomized studies with strong quasi-experimental research designs, systematic and statistically significant differences are observed.

Original languageAmerican English
Title of host publicationQuantitative Methods in Criminology
PublisherTaylor and Francis
Pages43-63
Number of pages21
ISBN (Electronic)9781315089256
ISBN (Print)9780754624462
StatePublished - 5 Jul 2017

Bibliographical note

Publisher Copyright:
© 2005 Shawn Bushway and David Weisburd.

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