The Robustness of the Horizontal Gaze Nystagmus Test in Standardized Field Sobriety Tests PDF Download
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Author:
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ISBN:
Category : Horizontal gaze nystagmus test
Languages : en
Pages : 2
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Book Description
Author:
Publisher:
ISBN:
Category : Horizontal gaze nystagmus test
Languages : en
Pages : 2
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Book Description
Author: James J. Dietrich
Publisher:
ISBN:
Category : Drunk driving
Languages : en
Pages : 140
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Author: James J. Dietrich
Publisher:
ISBN:
Category : Drunk driving
Languages : en
Pages : 146
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Book Description
Author: Aurora V. Barriga
Publisher:
ISBN:
Category : Alcohol
Languages : en
Pages : 18
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Book Description
Alcohol has many diverse effects on the human body. Alcohol also affects the eye and the visual system in very specific ways, slowing down the reaction time for normal eye movements and causing abnormal eye movements to occur. More than 16,000 people die yearly from alcohol related traffic accidents. The effects of alcohol on the body are important to note because more than just the individual who is consuming the alcohol is affected. As a result, a horizontal gaze nystagmus sobriety test has been created to identify motorists who have blood alcohol counts exceeding the legal limit, thus decreasing the number of alcohol induced traffic accidents. The reliability of the horizontal gaze nystagmus test is the highest of all sobriety tests. This high reliability is due in part to the fact that horizontal gaze nystagmus is an involuntary reaction at extreme lateral gaze. Coordinated movement assessments such as the walk and turn can be practiced and refined by the habitual drinker. Horizontal gaze nystagmus, on the other hand, cannot be practiced and is a portion of the standardized field sobriety test that is not completely understood by the average motorist. This research paper focuses on the variability of accurate grading of the horizontal gaze nystagmus test. Subjects consumed a calculated amount of alcohol to bring them within approximately 0.08 percent blood alcohol count. The subjects' eye movements were then videotaped and this video was shown to two groups of professionals. First to optometric doctors who were given a short review about grading the horizontal gaze nystagmus test, and secondly to officers who have been certified in conducting the horizontal gaze sobriety nystagmus test. Doctor and officer responses were recorded and analyzed.
Author: Lance Arthur Platt
Publisher:
ISBN:
Category :
Languages : en
Pages :
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This study investigated the blood alcohol concentration (BAC) predictions of above or below the .08 per se level by Texas peace officers in the field based on the scoring of the National Highway Traffic Safety Administration (NHTSA) Horizontal Gaze Nystagmus (HGN) test. This study involved the submission of 35 standardized field sobriety testing (SFST) evaluations, including the HGN test from Texas peace officers throughout the State of Texas in a six-month period after completion of the SFST practitioner course. A total data set of 2,000 individual samples was used for this study. A statistical analysis of the data indicated that Texas peace officer BAC predictions of above or below the .08 per se level, based upon the observation and scoring of the observed clues during the administration of the HGN test, were 92.8% accurate during the first six month period upon completion of the SFST practitioner course. An analysis of the data also indicated that Texas peace officer BAC predictions of above or below the .08 per se level, based upon the observation and scoring of the observed clues during the administration of the HGN test, were more accurate during the second three-month period (94.0%) as opposed to the first three-month period (91.6%) upon the completion of the SFST practitioner course. There was no statistical significance found between the two three month periods for BAC predictions by the Texas peace officers. The mean BAC for this study was .114. Three recommendations were made as a result of this study. First, the Texas peace officer should submit the 35 SFST evaluations on a bi-yearly basis to ensure consistency in the administration of the tests. Second, the Texas peace officer should attend SFST update training on a bi-yearly basis to maintain proficiency in the SFST battery and curriculum. Third, the current SFST practitioner curriculum should focus more on the administration and scoring of the SFSTs including the HGN test to maximize the learning of the competencies of the correct administration and scoring of the SFST battery.
Author: G. W. Good
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
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Book Description
Author: Curtis Dean High
Publisher:
ISBN:
Category : Drunk driving
Languages : en
Pages : 168
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Author: Texas. Parks and Wildlife Department
Publisher:
ISBN:
Category : Alcohol in the body
Languages : en
Pages : 44
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Book Description
Author: David Shinar
Publisher: Emerald Group Publishing
ISBN: 1786352214
Category : Transportation
Languages : en
Pages : 1262
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Book Description
This comprehensive 2nd edition covers the key issues that relate human behavior to traffic safety. In particular it covers the increasing roles that pedestrians and cyclists have in the traffic system; the role of infotainment in driver distraction; and the increasing role of driver assistance systems in changing the driver-vehicle interaction.
Author: Barry Levine
Publisher: Amer. Assoc. for Clinical Chemistry
ISBN: 9781890883874
Category : Law
Languages : en
Pages : 406
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