From DNA expert Dan Krane (thanks to Gil Sapir).
STRMix was found to be inadmissible in an important federal case ( Gissantaner ) out of the Western District of Michigan last week. Its implications for STRMix (and the FBI’s increasing reliance on it) make this very likely to be appealed. But, there is a potential for this to add an important new layer to things like the Daubert and Kelly-Frye standards (e.g. that tests should not be used outside of their validated range, and the relevant scientific community should not be limited to practitioners). Here is the bottom line from the court ruling inadmissibility exists in this particular case. It is telling:
“STRmix software had been in use a mere two years before its application to this case. And it had been in use by the MSP merely three months at the time of the DNA report and the conclusions reached by the MSP analysts—in simple terms, that the 7% contributor was 49 million times more likely to be Defendant than some unknown contributor.16 At that time, and even currently, there are no standards in place governing the development of PGS and its use in forensic DNA analysis.”
More articles (after the “Full Ruling) on how under validated methods are exaggerated (usually by prosecutors’ experts) when they get into criminal courts.
Full Ruling: Gissantaner – strmix inadmissible
FBI: DNA lab problems, scandals now presents new training on DNA STR stats
STRMix 2019 presentation about a “collaborative exercise.”
For years, these dentists have inappropriate claims of high percentages of accuracy to their adult versus juvenile ageing methods which they present in US immigration courts. This WaPo article summarizes how the federal controlled courts and prosecutors continue to use these dentists who are liberally paid to run a 2 minute proprietary and scientifically inaccurate software program which looks at the root development of third molars (wisdom teeth). Their per hour rate averages $500. It is even higher if the dentist evaluates more than one case per hour.
Quotes from 2 dentists show how far apart the opinions of these ageing practitioners are from any relationship with scientific reliability. Take a look. It is important for the children to be safe.
Other articles on this subject.
Forensics: Excuses for using inaccurate dental ageing methods fill this interview with University of Texas adjunct professor Dr. David Senn
Forensics: Unscientific, biased and exaggerated dental ageing in use by dentists hired by ICE
Forensics: Another bogus method from the bitemarkers. Ageing children as adults for ICE
Forensic Confusion: ICE testing for age of purported juvenile detainees not done according to its own rules.
An in-house DNA mixture program that has been abandoned by the NYCME’s office gets a jaundiced review by an ex-DA judge. Unfortunately, the legal and political barriers to its effect on past convictions is left up to lawyers to consider. It’s all about “weight.”
Good thread on law enforcement’s expanding use of public corporations who have access to public DNA databases. Customers now worried. But its a business opportunity for one new company.
We should add some convers on false positive or otherwise misleading “matches” assumed to be fact. Who has any oversight for this? Police? Isn’t this Forensic evidence?
This time its the Journal of Forensic Sciences that gets the gong for publishing a one-sided example of fumbled assumptions and disconnected exaggerations abt mitochondrial DNA.
The sociology of police crime labs is thoroughly disclosed in this short article. Max Houck recognizes the 10 year old NAS Report and he offers some improvements. Tell that to the USDOJ. Again.
These authors have introduced a bill to establish a FSC in the US state of Michigan. The Texas FS Texas commission effectively delisted bitemarks four years ago. In both cases wrongful convictions will be continue to be revealed.
DAs expert used a fancy software program to analyze a robbery vid. He botched it. The perp is short. This man is 6’3″. A jailhouse snitch lied during his trial. The DA was mute during all of it.
Posted in AAFS, Bad Forensic Science, costs of wrongful convictions, Crime lab scandal, CSI, expert testimony, Forensic Science, Forensic Science Bias, junk forensic science
Tagged Forensic science, junk forensic science, Miscarriage of justice, wrongful convictions
Hearings | Hearings & Legislation | House Committee on Science, Space and Technology
— Read on science.house.gov/hearings/raising-the-bar-progress-and-future-needs-in-forensic-science
Best minds in the business. Mostly female. Quite nice.