Polygraph Expert Witness On Polygraph Examinations Part 4
In The Case for Forensic Polygraph Testing in Post-Adjudication Sexual Offender Examination and Management, polygraph expert witness Ken Blackstone writes:
In a post-adjudication setting a convicted or committed offender is expected to take periodic polygraph examinations to encourage candor and discourage any lapse or relapse during treatment and supervision. The use of the polygraph in the evaluation and management of convicted and committed sex offenders is of great interest; treatment providers will often agree that the polygraph is the only existing tool for measuring behavior and supervising officers see the polygraph as a way of keeping offenders accountable. A periodic post-adjudication polygraph examination in the community can be used to assess a variety of issues that may include precursors to a reoccurrence and whether the convicted person should be considered for early release of parole or a relaxation of probation controls. These post-adjudication situations are similar in that these examinations will seldom address a specific “issue at hand” and while they are an option the only other option is prison.
Ken Blackstone is an expert regarding polygraph examinations. He is the author of the book Polygraph, Sex Offenders, and the Court (2011, Emerson Books ISBN 978-061-5506-80-7). www.blackstonepolygraph.com