sfst.us
Accuracy of the NHTSA's Standardized Field Sobriety Test SFST FST
http://sfst.us/index.html
Your Best Source for SFST Science. This web site is your best resource for understanding the science underlying US law enforcement's Standardized Field Sobriety Test. We'll focus on the question relevant to DUI prosecutions:. Given that our driver failed the scientific. What is the probability she was impaired by alcohol? Here's the plot line for this entire web site:. Those 90-something percent accuracies do not answer our question. I'm not going to teach you to prove the lady's. The driver failed the.
sfst.us
Standardized Field Sobriety Test: Secret Data
http://www.sfst.us/secret.html
If you think Americans charged with crimes should be able to see the evidence against them, SFSTs disappoint. SFST accuracy evidence is secret. The government makes extravagant scientifically invalid claims about the accuracy of the SFST, but it has never published and now refuses to release. The data on which those claims are supposedly based. Compare NHTSA standards with the standards of free and open science. Studies arranged by NHTSA. Research contractors picked by NHTSA. In the USA governments convi...
sfst.us
FST SFST accuracy sensitivity specificity predictive value
http://www.sfst.us/changed.htm
He basic idea of validating the SFST is easy. Have trained DUI officers do the SFST on a bunch of people and see how often the SFST gives the right answer. Tell everybody how often the SFST gives the right answer. End of study. But that's not what NHTSA did. Details vary; here's how it worked for the project I've been able to get. The officer wrote down his own personal hunch about what the person's BAC was. And NHTSA tells everybody how often. Gave the right answer. And did PBTs on every driver? The pic...
sfst.us
FST SFST accuracy sensitivity specificity predictive value
http://www.sfst.us/Accuracy.html
Our driver failed the scientific. What is the probability she was impaired by alcohol? The obvious answer is to use the accuracy of the SFST. If the SFST gives the correct answer 95% of the time, then there's a 95% chance our lady's SFST result was correct. I've told you this doesn't work. There's fancy math to explain, but for our purposes it'll work better if I just show you. Accuracy is more complicated than you think. Do the SFST 100 times and you'll get the correct answer. And a Field Sobriety Test.
fieldsobrietytest.info
FST SFST accuracy sensitivity specificity predictive value
http://www.fieldsobrietytest.info/Accuracy.html
Our driver failed the scientific. What is the probability she was impaired by alcohol? The obvious answer is to use the accuracy of the SFST. If the SFST gives the correct answer 95% of the time, then there's a 95% chance our lady's SFST result was correct. I've told you this doesn't work. There's fancy math to explain, but for our purposes it'll work better if I just show you. Accuracy is more complicated than you think. Do the SFST 100 times and you'll get the correct answer. And a Field Sobriety Test.
sfst.us
Denver Colorado DUI expert witness SFST DWI
http://www.sfst.us/Kane.html
Greg in Golden, Colorado. I have slipped the surly bonds of Earth.and touched the face of God. Who's web site is this? I'm Greg Kane, MD. An internist, medical malpractice consultant, and medical expert witness broker. In metro Denver, Colorado. At my day job I get calls from defense attorneys looking for a doctor to counter SFST evidence, usually a neurologist to explain nystagmus. Too often these cases involve drivers who failed an SFST, had a BAC of. They failed an SFST, they must have been impaired.
sfst.us
Accuracy of the NHTSA's Standardized Field Sobriety Test SFST FST
http://www.sfst.us/InHouse.htm
People think SFSTs are scientific because NHTSA says they are. Over and over scientific research has reported SFSTs are extremely accurate. But these scientific studies were non-peer reviewed in-house jobs, arranged by NHTSA, paid for by NHTSA, done by NHTSA contractors, never accepted by any scientific journal but just printed up by NHTSA itself. That's like doing away with the EPA and having coal companies validate strip mines. In important ways, NHTSA's SFST science isn't like real science. The point ...
sfst.us
DUI FST SFST HGN WAT OLS validation study raw data accuracy
http://www.sfst.us/raw.html
Everything you need to know in two bullet points. None of NHTSA's SFST validation studies reveal the accuracy of the SFST. Till now. On this page,available publicly for the first time, is the raw data set from the NHTSA's 1998 San Diego field sobriety test validation study. Issued by the agency as:. Validation of the Standardized Field Sobriety Test Batter at BACs Below 0.10 Percent. Authors Dr. Jack Stuster and Dr. Marcelline Burns. NHTSA conceals the accuracy of the SFST. They didn't only do SFSTs....
sfst.us
Standardized Field Sobriety Test: Secret Data
http://www.sfst.us/pdfs.htm
This web site gives the opinions of Dr. Greg Kane. Everything you read here is expressed only as my personal opinion. 2010 Nothing here may be reproduced without written permission. And raw study data. Here are NHTSA's official SFST validation studies. Early lab studies and failed field validation studies. Psychophysical Tests for DWI Arrest. M Burns, H. Moskowitz. The data set for this study is. Development and Field Test of Psychophysical Tests for DWI Arrest. V Tharp, M. Burns, H. Moskowitz. On innoce...
