The Pennsylvania Supreme Court ruled that criminal defendants have the right to offer expert testimony about the reliability of eyewitness identification, reported The Associated Press. The decision overturned a 20-year prohibition against using such experts.
The four-justice majority ruled that Pennsylvania will join the great majority of states and federal courts when it comes to letting an expert tell jurors about research into eyewitness testimony.
"Twenty years of advances in scientific study have strongly suggested that eyewitnesses are apt to erroneously identify a person as a perpetrator of a crime when certain factors are present," wrote Justice Debra Todd for the majority. She said it was "beyond serious contention that the statistical evidence on eyewitness accuracy is substantial."
The court ruling outlined the conditions under which the evidence can be allowed and put the decision in the hands of trial judges.
"While we need not precisely define such situations, generally speaking, it would be where the commonwealth's case is solely or primarily dependent upon eyewitness testimony," Todd wrote.
The case involved Benjamin Walker, convicted of a 2005 robbery of two University of Pennsylvania students in Philadelphia, based on the victims' identification of him to police. Walker is serving up to 35 years in prison.
The two dissenting justices argued that a better approach would be to amend the instructions about eyewitness testimony that judges give juries before deliberation. In most cases, the experts will be for the defense, wrote Justice J. Michael Eakin in a dissent joined by Chief Justice Ronald Castille.
"And if experts may opine about identification, why would they not be equally admissible on other peripheral matters, such as witness recollections of time, dates, places, colors, types of cars, clothes, directions and a host of matters which any given witness is likely to confuse?" Eakin wrote. "There being no logical difference, likening this decision to the camel's nose under the tent is not an exaggeration."
Castille defended the ability of jurors to use common knowledge and experience to assess credibility of witness identification.
"Before modern movements in psychiatry and psychology, mankind already had a rich literature laden with insight into humanity," Castille wrote, adding later that "matters affecting human perception and recall are hardly the exclusive and special bailiwick of social science experts."
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In fact, in Atkins v. Virginia the decision that banned the death penalty for the intellectually disabled, the only reference to dignity is the reference to a passage in Chief Justice Earl Warren’s 1958 opinion in Trop v. Dulles, “The basic concept underlying the Eighth Amendment is nothing less than the dignity of man.”
In “Dignity Rights: Courts, Constitutions, and the Worth of the Human Person,” Erin Daly, a professor at Widener University Law School, wrote that the U.S. Supreme Court’s first mention of dignity as an individual right is a fleeting reference in Skinner v. Oklahoma in 1942. In a 1945 dissent, Justice Frank Murphy wrote, “The right was his … because he was a human being. As such he was entitled to all the respect and fair treatment that befits the dignity of man.”
In Miranda v. Arizona the Supreme Court wrote of oppressive interrogations as “destructive of human dignity.” In Roper v. Simmons, the court outlawed the execution of juveniles. The Court wrote, “The basic concept of the Eighth Amendment is nothing less than the dignity of man.”
The reason the Supreme Court was forced to entertain another case dealing with intellectual disability resulted from the Court’s failure to outline a method for determining intellectual disability in the Court’s 2002 decision in Atkins. In Atkins the court left it to the states to define the parameters of who qualifies as mentally disabled for purpose of capital punishment.
Ultimately the question is whether a defendant’s mental deficiency is so significant that he is unable to appreciate the wrongfulness of his conduct. If so, his execution would violate the Eighth Amendment ban on cruel and unusual punishment and violate his inherent dignity as a human being.
Matthew T. Mangino is of counsel with Luxenberg, Garbett, Kelly & George, P.C. He is the former district attorney of Lawrence County and just completed a six year term on the Pennsylvania Board of Probation and Parole. His weekly column on crime and punishment is syndicated by GateHouse New Service. You can read his musings on the criminal justice system at www.mattmangino.com and follow Matt on Twitter @MatthewTMangino. His new book The Executioner’s Toll, 2010: The Crimes, Arrests, Trials, Appeals, Last Meals, Final Words and Executions of 46 Persons in the United States is now available from McFarland & Company publishers.
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