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Robustness of the Horizontal Gaze Nystagmus Test.
| 题名： | Robustness of the Horizontal Gaze Nystagmus Test. |
| 作者： | burns, m. |
| 关键词： | eye tests, law enforcement, validity, alcohol impairment, impairment indicators, drunk drivers |
| 摘要： | Police officers follow procedures set forth in the NHTSA/IACP curriculum when they administer the Standardized Field Sobriety Tests (SFSTs) to suspected alcohol-impaired drivers. The SFSTs include Horizontal Gaze Nystagmus (HGN) test, Walk-and-Turn (WAT) test, and One-Leg Stand (OLS) test. Courts generally accept testimony about WAT and OLS, but may not admit testimony about HGN. It has been argued that variations from standard procedures in HGN administration affect its validity and should render testimony about it inadmissible. Three experiments examined the effects of procedural variations in administration of the HGN test. Variations in stimulus speed and elevation, and distance of the stimulus from the suspects face were examined in a laboratory experiment. A second experiment conducted in training workshops varied the participants positions (standing, sitting, lying down). The third experiment examined HGN in participants who have functional vision in only one eye. / NOTE: Final rept. / Supplementary Notes: Sponsored by National Highway Traffic Safety Administration, Washington, DC. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0814；64p |
| 报告类型： | 科技报告 |
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