The process of using behavioral evidence left at a crime scene to draw conclusions about the offender, including inferences about personality characteristics and psychopathology, is called criminal profiling. Across the country, several agencies rely on the minds of criminal psychologists to guide them in the right direction to find the right offender. Criminal profiling allows investigators to learn the appearance and behavior of a potential criminal. Criminal profilers are primarily employed by the Federal Bureau of Investigation, more commonly known as the FBI. (Walker) The Central Intelligence Agency (CIA), Army Criminal Investigation Division (CID), and Naval Criminal Investigative Service (NCIS) are a few other agencies that also employ criminal profilers. Although there are other employers who hire criminal profilers, the FBI is the largest. In order to be considered for potential membership in these programs, it is recommended to have an advanced degree in behavioral or forensic science. However, the most important qualification is an officer's overall experience as a violent crime investigator. John Douglas, a famous FBI profiler, believes that “degrees and academic knowledge [are] not as important as experience and certain subjective qualities” (Muller 250). Since a specific curriculum has not yet been created for criminal profiling, additional training and classes must be completed in order to become a profiler for the FBI. The FBI's Behavioral Sciences Unit was established to investigate serial rape and homicide cases in 1974. From 1976 to 1979, several FBI agents, including John Douglas and Robert Ressler, interviewed 36 serial killers to help them develop theories and categorize different types of offenses. .... middle of paper ...... 2008. 277-290. Print. Douglas, John E. and Mark Olshaker. Obsession: The legendary FBI profiler probes the psyches of killers, rapists and stalkers as well as their victims and explains how to fight back. New York, New York: Scribner, 1998. 16-41. Print.Duggan, Joe. “The search for Helen Wilson’s killer continues.” Béatrice Quotidien Sun October 17, 2008: n. page. Beatrice Daily Sun. Internet. April 1, 2011. McGrath, Michael G. “Criminal Profiling: Does the Forensic Psychiatrist Have a Role?” » Journal of the American Academy of Psychiatry and Law 28. (2000): 315-324. Internet. April 13, 2011. Muller, Damon A. “Criminal Profiling.” Homicide Studies 4.3 (2000): 234-364. Internet. April 9, 2011. Walker, Jeffery T., Ronald G. Burns, Jeffrey Bumgarner, and Michele P. Bratina. “Careers in Federal Law Enforcement: Setting the Stage.” » Journal of Criminal Justice 19.1 (2008): 110-135. Internet. April 20 2011.