He received his PhD in Criminal Justice & Criminology from Sam Houston State University in 2015. His research interests are focused on policing, particularly police investigations, decision-making, training, and responses to victims. Currently, he is the principal research partner of the SAFE Kit Backlog Research Project, a three-year study funded by the Bureau of Justice Assistance’s Sexual Assault Kit Initiative (SAKI) that examines the problem of unsubmitted sexual assault kits in Kentucky. Campbell’s recent work has been published in the Journal of Criminal Justice, Crime & Delinquency, Justice Quarterly, Criminology & Public Policy, Police Quarterly, Journal of Forensic Sciences, and Violence Against Women. He has taught courses on Community Policing, Policing in the United States, and Research Methods.