Joseph W. Harper is a retired Metro-Dade County police detective,  a graduate of Florida International University in Miami, and holds a BS degree in Criminal Justice.  Mr. Harper is an expert witness in polygraph science in both Federal and State courts. With specific polygraphs conducted around the world, Mr. Harper is utilized by law enforcement and defense attorneys in the determination of truth and deception.

Professional associations include;

• The Florida Polygraph Association
• The American Polygraph Association
• The American Association of Police Polygraphists.

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Sean is a graduate of the highest rated polygraph education institute in the USA. He gradutated psychophysiological detection of deception with no less than a 96% average. Sean is fully proficient with most polygraph testing techniques such as UTAH 3, UTAH 4, BOST, LEPET, DLST and AFMGQT. Sean is also fully PCSOT certified and is a good standing member of the Florida Polygraph Association. Sean is also fluent in Spanish.

Professional associations include;

• PCSOT Certified for the MDSO
• The Florida Polygraph Association

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