William Terrill

Professor of Criminology and Criminal Justice at Arizona State University

Areas of Expertise

  • Policing
  • Police Use of Force
  • Police Culture

Key Findings

  • Eighty percent of agencies use some type of force continuum policy. MORE
  • There is a lot of variation in the range and order of the force continuum policies from force tactics and weapons, and how police agencies rank the order in terms of progression. MORE
  • There is no ideal (or flawed) policy approach across all outcomes. MORE


William Terrill, Professor of Criminology and Criminal Justice at Arizona State University, is an expert in police use of force and police culture.

Over the past 20 years, Professor Terrill has worked with various local and state law enforcement agencies, has directed several federal and locally funded research studies, has served as a consultant and expert witness on a multitude of projects and cases, and has been an invited speaker.

He served on the American Society of Criminology Division of Policing sub-committee to President Barack Obama’s Task Force on 21st Century Policing and currently serves as the chairperson for the Division of Policing. He has published dozens of scholarly articles, chapters, and reports, as well as two books.

Terrill received his Ph.D. and M.A. in Criminal Justice from Rutgers University, and B.S. in Criminal Justice from Pennsylvania State University, Harrisburg.