About DUVEN POLYGRAPH SERVICES LLC
Duven Polygraph Services, established in 2020, provides fair, professional, accurate, and ethical polygraph examinations in South Dakota and North Dakota. The company is led by Eric Duven, a certified forensic psychophysiologist with over 26 years of law enforcement experience.
Clinical and Criminal Forensic Polygraph ExaminationsPrivate Polygraph ExaminationsPrivate ConsultationsJob Screenings and ReviewsInstructional/Teaching Speaking EngagementsBackground InvestigationsLaw Enforcement Training
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