About the Police Integrity Research Group


Philip Stinson, J.D., Ph.D.

  • Position: Professor, Criminal Justice
    Principal Investigator

Dr. Phil Stinson joined the faculty at Bowling Green State University in 2009. He had previously worked as a police officer and an attorney. Dr. Stinson’s primary area of research are police behaviors, including police crime, police corruption, and police misconduct. Dr. Stinson’s research has been published in numerous peer-reviewed journals, including Criminal Justice Policy Review, The Prison Journal, Victims & Offenders, and Journal of Crime & Justice. His research has also been featured in many news publications, including The Washington Post, The Wall Street Journal, The New York Time, Los Angeles Times and FiveThirtyEight. Dr. Stinson has also appeared on CNN, MSNBC, CBS News, PBS, NPR, CBC, BBC, Sky News, and numerous other media outlets worldwide. His research was recently featured on the 2019 BBC documentary, Abused by the Police? Other research has appeared on the HBO series Last Week Tonight with John Oliver. Dr. Stinson teaches a mix of undergraduate and graduate courses at BGSU, including Criminal Law, Procedural Rights, Criminal Justice Ethics, Criminal Justice Policy Analysis, and Law, Evidence & Procedure in Forensic Science.


Eric Cooke, Ph.D.

  • Position: Assistant Professor, Criminal Justice

Dr. Eric M. Cooke earned his Ph.D. in Criminal Justice from Sam Houston State University in 2021. He joined the faculty at BGSU as an Assistant Professor in 2022. His primary research interests include life-course and developmental criminology, developmental processes and trajectories, biopsychosocial criminology, risky behaviors among adolescents and young adults, the effects that early life adversities have on later life outcomes, and victimology. He teaches several undergraduate and graduate level courses including Research Methods for the Human Services, Introduction to the Criminal Justice System, and the Nature of Crime. He has published papers in Trauma, Violence, & Abuse, Journal of Quantitative Criminology, Psychological Assessment, Journal of Interpersonal Violence, Crime & Delinquency, and Psychiatric Quarterly.


John Liederbach, Ph.D.

  • Position: Professor, Criminal Justice

John Liederbach earned his Ph.D. In Criminal Justice from the University of Cincinnati in 2002 and worked previously as an Assistant Professor in the Department of Criminal Justice at the University of North Texas before coming to BGSU in 2007.  He is primarily a police scholar, and his research focuses on the study of police behavior across community types, racial profiling, the processing of citizen complaints, and police crime.  He is the co-author of Police Patrol Allocation and Deployment (Pearson).  Dr. Liederbach also publishes in the area of white-collar crime and is a co-author of Digital Crime/Digital Terrorism (Pearson).  His research appears in a variety of scholarly journals including Justice QuarterlyPolice Quarterly, and Criminal Justice Police Review. 


Chloe Ann Wentzlof, M.S.

  • Position: Ph.D. Student, Sociology
    Chief Research Assistant

Chloe Wentzlof joined the staff of the Police Integrity Research Group in 2018. She is currently a doctoral student at Bowling Green State University studying Sociology, with a focus on Criminology.  Ms. Wentzlof earned her master’s degree in Applied Statistics from BGSU in 2019. Previously, at Grand Valley State University, she earned bachelor’s degrees in Statistics and Criminal Justice. Her previous work with the Ohio Bureau of Criminal Investigation on sexual assault kit processing is published in Journal of Forensic Sciences. Her current research interests include using data mining and predictive analytic algorithms to understand agency and community responses to police crime.



Research Assistants

The following student research assistants at Bowling Green State University worked on this project: Christy Adams, Sana Ali, Warifa Azeez, Jenna Bartholomew, Joelle Bridges, Gregory Burger, Zachary Calogeras, Evin Carmack, Xavier Cordonnier, Paige Crawford, Vincent Crews, Natalie DiChiro, Monica Eaton, Charles Eberle, Madison Engelbert, Alexis Faile, Douglas Fay, Rachel Fettinger, Madeline Fisher, Quinn Foley, Jacob Frankhouser, Megan Frate, Maria Gardella, Jillian Grzywna, Madison Guinther, Austin Hadamuscin, Monique Hampton, Joanna Hanson, Taylor Henn, Justin Hernandez, Aubrey Hill, Breanne Hitchen, Cole Hosterman, Isaac Houser, Dominique Howard, James Howell, Ryan Hunter, Stacey Jacovetti, Nicholas Jellison, Lyla Johnson, Leah Jolliffe, Nikolas King, Jessica Kirkpatrick, Tanya Korte, Conor Krofft, Jonathan Kutz, Theresa Lanese, Mariah Lax, Megan Lewis, Krista Long, Morgan Major, Monica Matticoli, Katelyn Moran, Kathleen Murray, Raven Ory, Jordan Parker, Tiffany Pleska, Andrew Pope, Jessica Rentner, Julia Rhoad, Ashley Roberts, Matthew Roberts, Dennis Roehrig, Andrew Rudnik, Autumn Rydarowicz, Bethany Sager, Delaney Salenbien, Adam Sierra, Lexie Sigsworth, Alexa Sir Louis, Zane Smiddy, Emma Smith, Scott Stevenson, Mackenzie Stewart, Jacob Stose, Callie Stull, Jarrod Sutton, Christin Swanepoel, Megan Swinehart, Taylor Szalkowski, Preston Tartt, Erin Thomson, Natalie Todak, Kevan Toney, Marissa Ulmer, Baylee Valerius, Kelly Wallace, Troy Wendel, Chloe Wentzlof, Georgianna Whitely, Mallorie Wilson, Emma Wirtz, Natalie Wise, Alton Woods, and Szymon Wozniak. 


Support for Dr. Stinson’s Police Integrity Research Group at Bowling Green State University and the Henry A. Wallace Police Crime Database was provided by the Wallace Action Fund of Tides Foundation on the recommendation of Randall Wallace.

The research project was previously supported by Award No. 2011-IJ-CX-0024, awarded by the National Institute of Justice, Office of Justice Programs, U.S. Department of Justice. The opinions, findings, conclusions or recommendations expressed on this website are those of the author(s) and do not necessarily reflect those of the Department of Justice.

Police Integrity Research Group: Impact of Support From the Wallace Action Fund at Tides Foundation

Updated: 07/27/2023 01:16PM