He served on the U.S. National Commission on the Causes and Prevention of Violence and was a consultant to the Federal Bureau of Prisons. He was a member of the board of trustees of the National Committee for the Prevention of Child Abuse (now PCA America). He is on the board of directors for the Police Foundation, a nonprofit organization that works to enhance policing techniques. In 1982, he testified before the Kansas legislature in support of the establishment of the guilty but mentally ill legal verdict.