Tag Archives: horizontal gaze nystagmus

Lack Of Training Dooms HGN Test

According to their own manual, the Horizontal Gaze Nystagmus (hereinafter HGN Test) is the most reliable of the three standardized field sobriety tests.  The police are trained that it is 77% accurate at detecting subjects at or above a .10% blood alcohol concentration.  But that is not the whole story. Officers are not told that…
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What Is A Horizontal Gaze Nystagmus Test?

What is the Horizontal Gaze Nystagmus Test? Alcohol is a central nervous system depressant affecting many of the higher as well as lower motor control systems of the body. This results in poor motor coordination, sluggish reflexes, and emotional instability. The part of the nervous system that fine-tunes and controls hand movements and body posture…
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There’s A New Standardized Field Sobriety Tests “Guide”

Standardized Field Sobriety Tests are commonly known as the roadside activities that police officers ask drivers to perform if the officer suspects that the driver is impaired by alcohol or another impairing substance. We call them "stupid human tricks."  Contrary to popular understanding and belief, many of these tests have little basis in science, and the ones…
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Standardized Field Sobriety Tests: They Don’t Work

The National Highway Safety and Traffic Administration’s standardized field sobriety tests were developed based on a 1977 study. The subjects of this study had blood alcohol content levels ranging from zero to .15 percent. Though there was such a large different between the test subjects, there was a 47 percent error rate in determining a…
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Unintended Consequences of an Ohio DUI Charge

A drunk driving charge can affect you in ways that you may not expect. Listed below are some of the more vexing issues associated with an Ohio DUI (OVI) charge. 1. Child Custody - If you are involved in a custody dispute, or have a vindictive spouse who would like to start one, a DUI/OVI conviction…
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