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validity Tag

Dayton DUI Attorney Charles Rowland > Posts tagged "validity"

Rowland Earns Forensic Sobriety Assessment Certification

This month, Charles M. Rowland II was re-certified as Ohio's only DUI attorney credentialed in Forensic Sobriety Assessment.  "FSA certification requires working knowledge of the scientific principles and research relating to sobriety testing in a DWI / DUI stop, including:The scientific literature on indications of intoxication such as red eyes and slurred speach NHTSA's Standardized Field Sobriety Tests (SFSTs) Testing concepts: Reliability and validity Diagnostic statistics: False positive rates, sensitivity, specificity, etc. Experimental design issues relevant to sobriety test studies Statistical concepts such as correlation, statistical significance, and effect size Visual science pertaining to the Horizontal Gaze Nystagmus (HGN) ...

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Standardization Vital to Field Test Reliability

The Importance of Standardization The validity of SFST results is dependent upon practitioners following the established, standardized procedures for test administration and scoring. NHTSA's SFST Student Manual states that the procedures demonstrated in the training program describe how SFSTs should be administered under ideal conditions, but that ideal conditions do not always exist in the field. Variations from ideal conditions, and deviations from the standardized procedures, might affect the evidentiary weight that should be given to test results.Courts in several states have reviewed the admissibility of field sobriety tests that assess physical coordination and have held that deviations in the administration of...

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