John Eck is Professor of Criminal Justice at the University of Cincinnati, where he teaches graduate courses in research methods, police effectiveness, crime policy, and crime prevention. With Ronald V. Clarke, he is the coauthor of Becoming a Problem-Solving Crime Analyst. Eck received his doctorate from the University of Maryland in 1994, and a master's degree in public policy from the University of Michigan in 1977. From 1977 to 1994, he directed research at the Police Executive Research Forum, in Washington, D.C., where he conducted studies of criminal investigations management and drug markets, and helped to test and implement problem-oriented policing in agencies throughout the United States. From 1995 to 1998, Eck was the evaluation coordinator for the Washington/Baltimore High-Intensity Drug Trafficking Area, where he developed methods for assessing the effectiveness of drug trafficking enforcement. Eck has written extensively on problem-oriented policing, crime mapping, drug markets, computer simulation of crime patterns, and crime prevention. He was a member of the National Academy of Sciences Committee on Police Policy and Research and is a judge for the British Home Office's Tilley Award for Problem-Solving Excellence. Eck's research interests include the causes and prevention of crime and disorder, and the ways crime patterns develop and change.