Welcome to WIU: Inside the System, presented by Western Illinois University’s School of Law Enforcement and Justice Administration (LEJA).In this week's episode retired FBI specialist and current WIU professor Dr. Jack Schafer returns to discuss his experiences in behavioral analysis. In law enforcement behavioral analysis is used to aid in criminal investigations by creating profiles of unknown offenders, developing investigative strategies, and preparing interview plans. Experts analyze crime scenes, victimology, and offender behavior to understand motivation, modus operandi, and likely characteristics of a suspect to narrow down possibilities in both active and cold cases. The FBI's Behavioral Analysis Unit (BAU) is a prime example of this practice, providing support for complex cases like terrorism, cybercrime, and violent crimes.Dr. Schafer discusses his experiences as as behavioral analyst assigned to FBI's National Security Behavioral Analysis Program. Hear what some of the physical signals he's looking for during an interrogation are, and how the word, "well" is a sign that a lie is to follow.