Faulty Forensics

Faulty Forensics

Postby Sarah » Tue Jul 22, 2014 7:14 pm

Faulty Forensics
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Re: Faulty Forensics

Postby McGirr » Tue Jul 22, 2014 7:41 pm

Forensic science and when they get it wrong! Part 1
Watch on youtube.com

Forensic science and when they get it wrong! Part 2
Watch on youtube.com

Forensic science and when they get it wrong! Part 3
Watch on youtube.com

Forensic science and when they get it wrong! Part 4
Watch on youtube.com

Forensic science and when they get it wrong! Part 5
Watch on youtube.com
fuhgeddaboudit
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Re: Faulty Forensics

Postby Numbers » Fri May 13, 2016 5:35 pm

Allegations of the suppression of exculpatory forensic evidence in the state of Virginia:

http://www.richmond.com/news/article_57 ... 6c6e8.html

After Harward exoneration, Va. proceeds with review of 200 old blood-typing cases

A review of old blood-typing cases prompted by the recent exoneration of a man who spent 33 years in prison for a murder he did not commit won the blessing of the Virginia Forensic Science Board on Wednesday.
....
The pilot effort will focus on 200 sample cases from 1982, 1986 and 1990. The department will report back to the board at its August meeting on whether initial findings indicate a larger effort is needed.

The review stems from the case of Keith Allen Harward — exonerated by the Virginia Supreme Court in record time and released from prison last month — who was convicted of the 1982 murder of a Newport News man and the rape of his wife. He was convicted largely on bite-mark testimony that was proved wrong by DNA testing.

Harward’s lawyers alleged in court papers that simple blood typing conducted by a forensic serologist for the department more than 30 years ago showed that Harward was not the assailant — but the test results were not included in the serologist’s formal report or in his later testimony.
....
In a formal certificate of analysis introduced at Harward’s trials, Pomposini {the prosecution's serologist} said he could not determine a blood type using secretion-typing tests from seminal fluid left on the rape victim. No transcript is available of the 1983 trial, but Pomposini testified in the 1986 trial that his tests indicated that either the assailant was a non-secretor, or a secretor who did not leave enough evidence of blood type to detect.

Pomposini’s formal findings and testimony enabled the prosecutor to argue in his closing to the jury in the 1986 trial that while the blood-typing of the sperm, which had to have come from the rapist, did not include Harward, it did not exclude him, either.

Last year, the department turned over Pomposini’s lab notes in the Harward case to the Innocence Project. The notes show that Pomposini identified antigens in sperm presumed to have been left by the assailant that indicated the assailant was blood type O — powerful evidence of innocence never shown to Harward’s trial lawyers as required, the Innocence Project contends.

According to an affidavit from Gary Harmor, the executive director and chief forensic serologist at the Serological Research Institute in Richmond, Calif., Pomposini’s lab notes show he unequivocally identified antigens consistent with a type-O secretor.
....
Expert witness testimony must be the product of reliable principles and methods. {Paraphrase of Fed. Rules of Evidence 702c}
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Re: Faulty Forensics

Postby Numbers » Wed Jun 15, 2016 10:51 pm

Here is a case involving alleged misrepresentation of forensics by prosecutors. According to this article, the forensics expert has testified in a federal civil suit that she was not permitted to testify in the criminal trial but her report was misrepresented by the prosecution, resulting in the wrongful conviction of six persons.

http://www.forensicmag.com/article/2016 ... 6et_rid%3d%%subscriberid%%%26type%3dcta

A forensic scientist testified in a federal civil rights suit trial that prosecutors skewed her analysis of bodily fluids from a 1985 murder.

The allegedly mischaracterized evidence ultimately led to years in prison for six defendants known as the “Beatrice 6.” The group was ultimately pardoned of all the charges based on later DNA testing.

The forensic scientist went through her statement that had been read to a jury decades ago, and pointed out how her findings differed from what a jury on the infamous “Beatrice 6” trial were told, according to a report by The Lincoln Journal Star.

Reena Roy, now director of Penn State University’s forensic science graduate program, detailed the mischaracterizations for a federal courtroom – beginning with the spelling of her name. ....
Expert witness testimony must be the product of reliable principles and methods. {Paraphrase of Fed. Rules of Evidence 702c}
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Re: Faulty Forensics

Postby Numbers » Thu Aug 04, 2016 9:12 pm

Misconduct or Malpractice in Serology Testing in a 1988 rape case

http://www.innocenceproject.org/dna-evi ... 1988-rape/

To corroborate the victim’s identification, the State presented testimony from an analyst with the New Jersey State Police Laboratory that serology testing placed Harrell in less than 2 percent of the population who could have deposited sperm found in the victim’s rape kit. This was incorrect. Because only victim’s blood type was detected in the testing, in actuality no conclusion could be drawn as to the source of the sperm.

Harrell testified in his own defense, insisting that he was playing basketball with friends, that included a police detective, and later went on a bike ride with his three-year-old nephew to a friend’s house nearby. Several of his friends, including the detective, also testified in his defense. On May 19, 1992, Harrell was found guilty of second degree sexual assault.

“The erroneous testimony of the serology analyst is especially troubling because it violates very basic scientific principles, and the implications are far-reaching. The analyst in this case testified as an expert in hundreds of cases in all 21 counties in New Jersey, and as a supervisor in the biochemistry unit, he oversaw the work of other examiners,” Potkin said. “The state has an obligation to conduct a thorough independent review of all of the cases potentially impacted to insure that other people weren’t wrongly convicted based on flawed serology.”
Expert witness testimony must be the product of reliable principles and methods. {Paraphrase of Fed. Rules of Evidence 702c}
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Re: Faulty Forensics

Postby Numbers » Thu Dec 01, 2016 11:24 pm

http://www.dispatch.com/content/stories ... ience.html

Debate rages over quality of science in crime labs

Since 1989, faulty or misleading forensic science has played a significant role in the exoneration of nearly a quarter of the 1,900 people in the U.S. who have been wrongly convicted of crimes, according to a Dispatch analysis of data from the National Registry of Exonerations. That includes 16 Ohioans, four of whom had been sentenced to death. Mistaken identifications, misconduct, inadequate defense attorneys and false confessions and accusations also played a role in their exonerations.

And flawed forensic science was the sole reason 124 innocent people were convicted of crimes they didn't commit.

....

Earlier this year, at President Barack Obama’s urging, the President’s Council of Advisors on Science and Technology also studied the trace-evidence issue.

It, too, found problems with analysis of trace evidence such as bite marks, hair and footprints. The report's authors suggested that the forensic science community develop methods to quantify findings with trace evidence much the way DNA testing offers probabilities of something belonging to a defendant or victim.
Expert witness testimony must be the product of reliable principles and methods. {Paraphrase of Fed. Rules of Evidence 702c}
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Re: Faulty Forensics

Postby Numbers » Thu Dec 01, 2016 11:30 pm

http://www.innocenceproject.org/north-c ... convicted/

North Carolina Governor Pardons Man Wrongly Convicted Based on Erroneous Hair Evidence

(Charlotte, NC – December 1, 2016) North Carolina Governor Pat McCrory today issued a pardon for Timothy Bridges, who wrongly served over 25 years for a rape and burglary, based in large part on the erroneous testimony of an FBI-trained state hair analyst who claimed that Bridges’s hair linked him to two hairs found at the scene. Bridges was released on October 1, 2015, after prosecutors consented to vacating Bridges’s 1991 convictions. Bridges’s legal team, which included lawyers from the Innocence Project and North Carolina Prisoner Legal Services, along with David Rudolf, also uncovered evidence that police failed to turn over to the district attorney’s office before trial. Post-conviction discovery materials showed that police paid informants and made other threats or promises to the informants, which was contrary to their testimony at trial. Subsequent DNA testing on crime scene evidence also excluded Bridges. The pardon means that Bridges will be entitled to compensation under a state statute that awards $50,000 for each year of wrongful imprisonment up to a maximum on $750,000.
Expert witness testimony must be the product of reliable principles and methods. {Paraphrase of Fed. Rules of Evidence 702c}
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