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Constricting one's anus can work as a polygraph countermeasure provided that it is done timely with the asking of the "control" questions. This countermeasure so concerns polygraph operators that all federal polygraphers are required to use a seat pad that purports to detect such activity.

Alternative countermeasures include mental activity (such as thinking exciting thoughts, or doing math in one's head) and tongue-biting.

For more on polygraph countermeasures, see Chapter 4 of The Lie Behind the Lie Detector:

https://antipolygraph.org/pubs.shtml

Polygraphs measure heart rate, breathing, and palmar sweating, which are affected by nervousness, but are not systematically correlated with lying. Voice stress analyzers don't actually measure stress in the voice.

Point well taken. But the U.S. government does consider the polygraph to be a pass/fail procedure. Applicants and employees suffer severe career harm for "failing."

There is no documented example of the polygraph ever catching a mole. On the contrary, all of the known moles who were subjected to polygraph screening beat the polygraph.

Exactly as 3JPLW mentioned, government agencies value the polygraph as an aid to interrogation. Naïve and gullible persons, be they applicants for government jobs, criminal suspects, or criminals released on probation or parole, will sometimes make admissions that they might not otherwise make, because the fear that the polygraph can read their mind convinces them that their best choice is to confess.

But the polygraph can only have such utility so long as the general public believes that it can detect lies. We're at the point now that applicants for public jobs who face polygraph screening are often being specifically instructed not to research polygraphy.

In the United States, the Employee Polygraph Protection act includes blanket exemptions for federal, state, and local governmental agencies, as well as exemptions for security services (such as guards who transport cash) and for those who handle or transport drugs.

Thank you for the time you took to research this question and for sharing your findings and thoughts on this! Yours is the most helpful reply I've received.

If I interpret things correctly, the Google Search Console Beta suggests that the situation is worse than I imagined. I have taken a screen shot that you can view here:

https://antipolygraph.org/graphics/google-search-console-ap-...

As you'll note, over the past 16 months, Google reports 147,000 impressions for the search word "polygraph," with an average position of 8.4, but only 381 total clicks. And the number of impressions and clicks flatlined somewhere around March. What do you make of this?

It has been a few years now that AntiPolygraph.org's Google ranking on the search term "polygraph" would vary between the first, second, and third page of results. We noticed the complete delisting on "polygraph" early this year. As observed in the United States and several other countries, a Google search on "polygraph" will return no results at all from AntiPolygraph.org, whether or the 1st page or the 30th.

I appreciate how the present blog post may strike some as conspiracy-minded. Especially those not familiar with the history of Operation Lie Busters, a U.S. criminal investigation that targeted the proprietors of websites that provided information to the public about how to pass or beat a polygraph test.

As you'll see in this recent post announcing the leak of the U.S. government's polygraph school's documentation about polygraph countermeasures, the federal polygraph community considers AntiPolygraph.org to be a major threat, and it features front and center in their training:

https://antipolygraph.org/blog/2018/06/09/ncca-polygraph-cou...

None of this necessarily entails any state influence in Google's action to delist AntiPolygraph.org on certain key search terms.

It is true that our web design is dated. But this doesn't seem to account for the site being completely delisted from Google on such searches as "polygraph" and "lie detector."

I am not familiar with any other instances of such partial delisting by Google. Are you? If so, what were the causes for that?