Polygraph Techniques – A Manual in Lie Detection with Laboratory Activities

Lie detection techniques, as described in the criminology program, focus on polygraph examinations, its applications in criminal investigations, and administration of justice. This piece of work aims to provide a comprehensive understanding of polygraph techniques, both theoretically and practically. It includes review questions to prepare the students for the licensure examination and laboratory exercises to develop their skills in conducting polygraph examinations. Polygraph examination is basically used for investigation and screening purposes. Government and law enforcement polygraph examiners utilize the polygraph as a tool in criminal investigations and employee screenings. Private practitioners are more involved in conducting pre-employment and periodic audits on applicants and employees of private companies. Security investigators also enlist the services of private practitioners to assist in determining the involvement of suspects in specific cases.