Department of Defense Polygraph Institute

The Department of Defense Polygraph Institute (DoDPI) was an organization responsible for training and certifying polygraph examiners who conduct lie detection tests for military and government security purposes. It developed standardized procedures and protocols to ensure the accuracy and integrity of polygraph examinations used in investigations, security clearances, and personnel screening. Although its functions have since been integrated into other agencies, DoDPI played a key role in establishing professional standards within the field of polygraph testing for national security.