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It is important to know whether someone is lying or telling the truth in police investigations and in court trials. We provide training program on Layered Voice Testing And Speaker to identify various types of stress and emotional reactions of an individual by analyzing key vocal properties in his or her speech. We provide instruction and training in polygraph sciences; affords the student the opportunity to develop and refine the knowledge and skills necessary for successful accomplishment of polygraph examinations. Layered Voice Testing And Speaker training is designed with the objective and mission to provide quality polygraph training to qualified, highly motivated, sponsored persons in law enforcement and other organizations.