Countermeasures worked for me.

After reading "Lie Behind the Lie Detector" a few times I went into the test knowing what to expect... a big help. There was an incident at the office which I knew something about, but knowledge of the incident could have gotten me canned or may have forced me to rat someone out. After 13 years on the job, there was no way I was going to lose it all due to this voodoo crackpot of a test.

The woman giving the test did pretty much everything that "Lie Behind the Lie Detector" said she would. First, she showed me her "high-tech, state of the art" testing apparatus. It was a $1100 laptop. She also showed me the software she used from John Hopkins University that did the scoring for her. She showed me results of two tests she claims she did on her own- I don't know if she thought I was stupid or what, but the files she opened had the words "demo" in the file name. I almost laughed in her face. Afterwards, she sat on the back of her chair, one foot on the seat of her chair, and the other on the seat of my chair, forcing me to keep my legs squeezed together while she asked a bunch of questions. This went on for almost 30 minutes and was quite uncomfortable. This was her way of trying to get me to feel as though she was "in control".... far from it. I knew what she was up to, and again I found myself trying not to laugh in her face.
Then she hooked me up to the machine and made me sit there for another 20 minutes while she typed the questions into to her cheesy laptop, then she printed them. She sat on the desk, practically right on top of me, and reviewed the questions.
Then, the test.
It was a direct-question test (I think that's the name of it). There were no "control" questions, just direct ones. "Did you do this" and "Did you ever do that". When she asked the questions about things that had nothing to do with why I was in there, I did the butt-squeeze thing. Most importantly, I paid close attention to my breathing. I made sure that it was consistent. In fact, answering her questions came second- breathing was most important and my first priority.
Keeping your cool and relaxing, and not being intimidated by the tester or the machine is also important.

Anyhoo, I still have my job and passed with flying colors.

Thanks, antipolygraph.org. You saved my career.