Glenn Walters is an American forensic psychologist and Associate Professor of Criminal Justice at Kutztown University in Pennsylvania. He worked for three decades in federal government as a clinical psychologist and drug program coordinator for military and federal prison inmates. He has published widely in criminology, including addiction. He has developed a Psychological Inventory of Criminal Thinking Styles (PICTS). He argues that criminality is best understood and prevented by examining how it develops within the context of a person's life, and has critiqued genetic studies via metaanalytic research.