National Center for Credibility Assessment

National Center for Credibility Assessment: Overview

The National Center for Credibility Assessment (NCCA) stands as the United States government's premier institution for polygraph training, research, and oversight. Located at Fort Jackson, South Carolina, the NCCA plays a vital role in national security by ensuring the integrity and accuracy of the polygraph testing conducted across federal agencies. Originally known as the Department of Defense Polygraph Institute (DoDPI), the center was renamed NCCA to reflect its broader mission beyond polygraph alone. The center supports 25 federal agencies and operates under the Defense Counterintelligence and Security Agency (DCSA). Students must maintain a 3.0 GPA during the 3½-month course and earn 15 graduate-level college credits. This federally-funded program is not open to civilians, with enrollment typically limited to federal agents, military personnel, and occasionally state and local law enforcement officers on a space-available, cost-reimbursable basis.

Curriculum & Training Approach

The NCCA offers a comprehensive 12-week Basic Polygraph Examiner Course that sets the gold standard for credibility assessment education. Each student is able to have about 45 real life tests with Soldiers from Fort Jackson's Basic Combat Training population, providing invaluable practical experience. The rigorous curriculum covers polygraph theory, instrumentation, question construction techniques, chart analysis methodology, and comprehensive interview procedures. Graduates must complete this academic training followed by a supervised internship, typically at their agency, before becoming fully certified. Students return to the center every two years for 80 hours of continuing education. In addition to the basic course, the NCCA also offers advanced specialized training programs.

Faculty & Expertise

Bill Norris served as the center's director during its transition to the NCCA name in 2010. The faculty consists of highly experienced polygraph professionals with extensive backgrounds in federal law enforcement, military intelligence, and credibility assessment research. Many instructors are former federal agents who have conducted thousands of polygraph examinations across various government agencies. The center also provides support to local and state law enforcement agencies on an as available basis and sends instructors to Iraq and Afghanistan to train military on the use of credibility assessment tools in the field. The teaching staff maintains active research programs and contributes to the advancement of polygraph science through peer-reviewed publications and technical standards development.

Access Restrictions & Enrollment

The NCCA operates as a restricted federal training facility with highly selective admission criteria. The NCCA is not a public or private vocational school open to general enrollment. Rather, it is the official polygraph training academy for federal government agencies including the FBI, CIA, Secret Service, DEA, and other intelligence community organizations. Only nine of the 25 agencies the center supports are defense organizations. Federal employees must be sponsored by their employing agency and meet specific security clearance requirements. The application process involves extensive background investigations and psychological evaluations to ensure candidates possess the integrity and mental acuity necessary for this sensitive profession.

Campus & Research Facilities

The National Center for Credibility Assessment building (7540 Pickens Ave) is readily noticeable on the right at Fort Jackson. Being at Fort Jackson has been a perfect location for us because the Army provides us with BCT Soldiers to act as test subjects. We couldn't get our mission accomplished without help from Fort Jackson. The state-of-the-art facility houses advanced polygraph laboratories, research centers, and classroom spaces equipped with the latest credibility assessment technology. The campus benefits from Fort Jackson's comprehensive military infrastructure and security protocols, providing an optimal environment for sensitive government training operations.

National Standards & Research Mission

NCCA doesn't just train examiners—it sets the national standard for polygraph procedures within the federal system. It conducts audits and evaluations of agency-level polygraph programs, validation studies and peer-reviewed research on test accuracy, and development and enforcement of technical standards and ethical guidelines. The center's research division continuously advances the science of credibility assessment through empirical studies, technology development, and international collaboration. This dual mission of training and research ensures that federal polygraph programs maintain the highest standards of scientific rigor and operational effectiveness.

Career Outcomes & Professional Impact

NCCA graduates represent the elite tier of the polygraph profession, conducting thousands of critical examinations annually for national security, counterintelligence, and law enforcement purposes. NCCA-trained federal examiners are generally regarded as the most rigorously trained professionals in the field due to the program's depth, duration, and oversight. These professionals go on to serve in sensitive positions throughout the federal government, where their expertise directly contributes to protecting national interests. While civilians cannot access NCCA training, civilian examiners typically pursue training through American Polygraph Association (APA) accredited schools, which follow standards modeled in part after NCCA guidelines. For information about civilian polygraph training options, visit our training directory.

Historical Evolution

First established in 1951 as the Army Polygraph School, the center has expanded its focus over the years to encompass all technologies that rely on physiological and behavioral measures to test for agreement between an individual's statements and memories. The institution evolved through several organizational changes: starting as the United States Army Polygraph School from 1951-1986, becoming the Department of Defense Polygraph Institute in November 1986, then the Defense Academy for Credibility Assessment from 2007-2010. The Defense Academy for Credibility Assessment was renamed the National Center for Credibility Assessment during a ribbon-cutting ceremony in 2010, changing from DoDPI which was renamed DACA in 2007. According to former director Bill Norris, the name change reflected that while still DoD-operated, the center supports every polygraph program in the federal government, making it essentially a national organization since 1995. The transfer to DCSA represents the most recent major mission area transferred to the agency, following the merger of the National Background Investigations Bureau and DOD Consolidated Adjudications Facility with the legacy Defense Security Service.

Admission to the NCCA is highly restricted and available exclusively to federal government personnel. Enrollment is typically limited to federal agents, military personnel, and on occasion, state and local law enforcement officers on a space-available, cost-reimbursable basis. Candidates must be sponsored by their employing federal agency and possess appropriate security clearances. The selection process includes comprehensive background investigations, psychological evaluations, and agency endorsement. Applicants must demonstrate the integrity, mental acuity, and professional competence necessary for conducting sensitive credibility assessments in national security contexts. The NCCA is not a public or private vocational school open to general enrollment, but rather serves as the official polygraph training academy for federal government agencies. Visitors must pass through a guard post where they are issued a visitor's pass and must bring photo ID due to the facility's location on the secure Fort Jackson military installation.