Forensic Science
PRESENTATION: The Limitations of Drug Testing
Thank you to everyone who attended my presentation last week at the AACJ’s 32nd Annual DUI Conference in Tucson, Arizona (May 3 – May 4, 2019). As promised to those who attended, here are my presentation materials converted in a series of videos. NUMBER 1/3 NUMBER 2/3 NUMBER 3/3
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FORENSIC SCIENCE: Calibrator Concerns in Blood Alcohol Testing [DUI]
The ability to measure the amount of alcohol in a blood sample is fundamental to determining if a person violated the law. DUI laws usually prohibit exceeding a certain amount of alcohol in a person system. This task requires that a laboratory develop a measurement system. Within that measurement system is a machine called a gas chromatograph. The machine performs … keep reading »
PRESENTATION: Explaining Complex Science to Juries
Thank you to everyone who attended my presentation last week at the APDA Conference in Tempe, Arizona [06.21.19]. Here is a PDF and MP4 Video of my Presentation Materials as promised. EXPLAINING COMPLEX SCIENCE (PDF) Video of Presentation Materials (MP4)
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FORENSICS: Blood Alcohol Testing & Temperature
Today, most forensic tests are conducted using a machine. The machine is controlled by software and firmware. The results of a test are printed out for someone to review. Most of us proabably just assume whatever the printouts show is correct. However, this assumption fails to recognize how much human influence there is on such tests. Moreover, the printed result … keep reading »
PRESENTATION: Chemical Testing in Arizona DUI Cases
Here are the slides from my March 30, 2018, presentation converted into an MP4. This was an in-house CLE presentation at the Beus Center for Law and Society. … keep reading »
