Monday, February 10, 2020

Showdown: DNA evidence vs. cognitive bias: Forensic psychologist Karen Franklin explores the 'showdown' between these two pivotal elements in police investigations and reached some very interesting conclusions. HL.


PUBLISHER'S NOTE: Another neat read from this perceptive forensic psychologist, adjunct professor and former criminal investigator and legal affairs reporter. In her words:  "But here’s the really bad news: Even with modern DNA technology’s miraculous crime-solving capabilities, fixations like Detective Harrison’s  (a detective in one of her examples) still lead police astray with some regularity. In particular, forensic science is no match for a priori stereotypes about the bad guys.")  Read the entire commentary - with all of her examples -  at the link below."

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PASSAGE OF THE DAY: "Cognitive scientists have various names for the mental processes that cause people to prematurely focus on one solution to the exclusion of other possibilities. Tunnel vision. Myopia. Confirmation bias. In essence, the Yuba City police identified a suspect, based in part on their preconceived ideas about what a guilty person should look like, and in the process closed their minds to alternate possibilities. Cognitive scientists have various names for the mental processes that cause people to prematurely focus on one solution to the exclusion of other possibilities. Tunnel vision. Myopia. Confirmation bias."

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COMMENTARY: "Showdown: DNA evidence vs. cognitive bias," by Karen Franklyn, published on her Blog 'In the News' on January 14, 2020. (Karen Franklin, Ph.D) is a forensic psychologist and adjunct professor at Alliant University in Northern California. She is a former criminal investigator and legal affairs reporter.)

GIST:  "A case in point: The murder of elderly Leola Shreves in Yuba City, California...The attack was frenzied. As detailed by San Francisco Chronicle reporter Matthias Gafni, the TV set was smashed and a door was ripped from its hinges. The 94-year-old victim had been tortured, strangled and beaten to a pulp. Her teeth were shattered, her jaw and back broken, and 17 of 24 ribs cracked. Her ears and scalp were nearly ripped from her skull. Police quickly latched onto the next-door neighbor, a socially awkward video-game devotee. Michael Alexander aroused police suspicion in part due to his troubled past: He had been arrested at age 15 for threatening to kill a high school teacher and burn down the school after fighting with and choking another student. Burdened with an intellectual disability, the 20-year-old was no match for the seasoned detectives who brought him in for questioning. When he denied ever being at his neighbor’s house, police lied to him, saying his fingerprints, shoe prints and DNA had all been found there. When he continued to profess his innocence, detectives suggested that maybe he had blacked out, and an alter ego named “Angry Mike” had committed the crime. Alexander’s naïve acceptance of the detectives’ ruses eventually led him to accede to their version of reality despite not having any recollection of it. For anyone with expertise on false confessions, Alexander’s had all the classic hallmarks. It was replete with maybes and probabilities. The details did not match the evidence from the crime scene. And Alexander immediately recanted. “Have you been looking for the real killer?” he later asked the detectives. His question fell on deaf ears. He was arrested and charged with capital murder. Unbeknownst to him at the time, there was indeed an abundance of real physical evidence – DNA, fingerprints and shoe prints. All of it excluded him and pointed to someone else. Astonishingly, the identity of Shreve’s killer was in front of the detectives the entire time, but it took them six long years to realize it.  On the night of the murder, a man named Armando Cuadras was found collapsed on the street just 300 yards away, drunk and badly injured. He was taken to the hospital by ambulance, but police failed to connect the two events. Cuadras, whose DNA was splattered all over the bloody crime scene, is now awaiting trial. Mental blinders:  Cognitive scientists have various names for the mental processes that cause people to prematurely focus on one solution to the exclusion of other possibilities. Tunnel vision. Myopia. Confirmation bias. In essence, the Yuba City police identified a suspect, based in part on their preconceived ideas about what a guilty person should look like, and in the process closed their minds to alternate possibilities. Cognitive scientists have various names for the mental processes that cause people to prematurely focus on one solution to the exclusion of other possibilities. Tunnel vision. Myopia. Confirmation bias. In essence, the Yuba City police identified a suspect, based in part on their preconceived ideas about what a guilty person should look like, and in the process closed their minds to alternate possibilities."

The entire commentary can be read at:
https://forensicpsychologist.blogspot.com/2020/01/showdown-dna-evidence-vs-cognitive-bias.html

PUBLISHER'S NOTE: I am monitoring this case/issue. Keep your eye on the Charles Smith Blog for reports on developments. The Toronto Star, my previous employer for more than twenty incredible years, has put considerable effort into exposing the harm caused by Dr. Charles Smith and his protectors - and into pushing for reform of Ontario's forensic pediatric pathology system. The Star has a "topic"  section which focuses on recent stories related to Dr. Charles Smith. It can be found at: http://www.thestar.com/topic/charlessmith. Information on "The Charles Smith Blog Award"- and its nomination process - can be found at: http://smithforensic.blogspot.com/2011/05/charles-smith-blog-award-nominations.html Please send any comments or information on other cases and issues of interest to the readers of this blog to: hlevy15@gmail.com.  Harold Levy: Publisher: The Charles Smith Blog;

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FINAL WORD:  (Applicable to all of our wrongful conviction cases):  "Whenever there is a wrongful conviction, it exposes errors in our criminal legal system, and we hope that this case — and lessons from it — can prevent future injustices."

Lawyer Radha Natarajan:
Executive Director: New England Innocence Project;


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