Dr. Bill Lewinski is one of the world’s leading behavioral scientists whose work has focused primarily on the intensive study of the human dynamics involved in high stress, life-threatening encounters. He has a Ph.D. in Psychology with a concentration in Police Psychology and is a professor emeritus of Law Enforcement at Minnesota State University, Mankato, where he taught for more than 28 years.  In 2003 he was named Distinguished Professor of the Year for the College of Social and Behavioral Sciences. He is a professor of negotiations at the University of Padua in Italy.  He is the founder and director the Force Science® Institute, Ltd. (FSI), which is a research, consulting and training organization focused primarily on human behavior in use-of-force situations. The mission of FSI is to gather experts from a variety of academic and research disciplines from a wide range of educational institutions, including Minnesota State University, Mankato, the Mayo Clinic, UCLA, University of Calgary, Indiana University, and many universities in the United Kingdom, to assist in the study of officer and subject behavior, primarily in lethal force encounters.  Force Science® publishes a popular, twice-monthly e-newsletter, Force Science® News, that presents research and commentary on force issues in law enforcement.  FSN has an estimated total readership of approximately 200,000 readers with some editions reaching over three quarters of a million readers.  The International Association of Chiefs of Police distributes select articles to top administrators worldwide.


Dr. Lewinski’s research has looked at subject and officer movement in lethal force encounters, action/reaction parameters, perception and memory.  His groundbreaking findings have been presented at peer-reviewed conferences in psychology, criminal justice and engineering. They have also been published in national law enforcement publications, websites, e-newsletters and have been discussed in peer-reviewed publications.  Additionally, his work was highlighted on Daily Planet, a televised program on the Discovery Channel Canada, 48 Hours Investigates, and a BBC Panorama special program, When Cops Kill.  Dr. Lewinski’s studies involve technologically sophisticated investigations into the perceptual and psychological factors that impact an officer’s perception, reaction and memory in lethal force encounters.  One study involved a collaborative effort with the University of Calgary and police services in the United Kingdom to determine the relationship of focal vision to information processing, judgment and accuracy of shot placement in lethal force encounters.

Dr. Lewinski has trained in Goju Karate (traditional Japanese Karate) since 1967. He is a regional director and on the national board of examiners with Goju Kai Karate Do, U.S.A. He has testified in grand juries, coroner’s inquests, arbitration hearings, and both criminal and civil cases throughout North America and the United Kingdom. He earned a Bachelor of Arts in Psychology and Sociology (1967), from Lakehead University in Thunder Bay, Ontario, Canada and a Master of Arts in Counseling from the University of Arizona (1979).  He subsequently earned a Doctorate in Police Psychology from Union University and Institute, Cincinnati, Ohio (1988).  Additionally, he has completed graduate work in psychology at the University of Vermont, University of Ottawa and the Alfred Adler Institute in Chicago.



Dr. Lewinski is an extremely popular speaker and consultant who has presented to and worked with a diverse span of groups, ranging internationally from the British House of Commons and House of Lords to the London Metropolitan Police, New Scotland Yard, Police Service of Northern Ireland, Republic of Ireland Police, I.A.C.P.,  and domestically from the FBI and other major law enforcement organizations to local police departments. He has presented at more than 100 international, national and regional conferences and has conducted more than 150 training classes and seminars worldwide. His audiences have represented a vast array of professionals, including investigators, attorneys, administrators, internal affairs personnel, and civilian review groups.



Dr. Lewinski can be reached through the Chicago office of the Force Science® Institute through the contact page on this website.

Dr. Bill Lewinski

© 2017 Dr. Bill Lewinski