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Over the last 15-20 years in which the application of polygraphy has expanded into the field of sexual offender management and assessment, so has the number of so-called "appropriate" test methods and formats. Well meaning examiners have digressed from what they should have learned in basic polygraph school, to methods of testing which could be best described as anywhere from flawed to outrageous. Most of us have heard all the horror stories: a 20-question test--all relevant questions, no comparisons [i.e., "control" questions], sacrifice relevants, symptomatics, or even neutrals. There have been an excessive number of relevant questions in some examinations, even when using comparisons. What continues to occur with alarming frequency is the examination where the format is fine, but the relevant questions do not fit the definition we all should subscribe to: single in issue, narrow in scope, concise, and does not allow for multiple meanings or interpretations. When examiners stray from that concept of basic polygraphy, they invite disaster, not only by offering opinions about truthfulness to a bad question, but by not addressing those issues of primary importance.
In 1998, at the annual meeting of the American Polygraph Association (APA) in Washington, DC, a subcommittee that had been working together for the previous year, presented to the Board of Directors a set of standards for this specialized field of Post-Conviction Sex Offender Testing. Ultimately, these new standards were adopted. Now any member of the APA who is engaged in the practice of post-conviction testing of sexual offenders is required to complete an approved 40-hour course, and pass a written examination administered by the APA.
These standards authorized two examination formats: Zone Comparison, and Modified General Question Techniques. No more than four relevant questions can be used in these formats, and while the standard allows for "reasonable departures" from validated methods, such deviations need to be fully supported by other professionals, and consistent with research. Nowhere does the standard allow for changing the basic definition of any polygraph question. These new standards will complement, not subvert, all the existing standards of practice of the American Polygraph Association.
